Compounds and methods for the treatment of disorders mediated by platelet activating factor or products of 5-lipoxygenase

ABSTRACT

2,5-Diaryl tetrahydrofurans, 2,5-diaryl tetrahydrothiophenes, 2,4-diaryl tetrahydrofurans, 2,4-diaryl tetrahydrothiophenes, 1,3-diaryl cyclopentanes, 2,4-diaryl pyrrolidines, and 2,5-diaryl pyrrolidines are disclosed that reduce the chemotaxis and respiratory burst leading to the formation of damaging oxygen radicals of polymorphonuclear leukocytes during an inflammatory or immune response. The compounds exhibit this biological activity by acting as PAF receptor antagonists, by inhibiting the enzyme 5-lipoxygenase, or by exhibiting dual activity, i. e., by acting as both a PAF receptor antagonist and inhibitor of 5-lipoxygenase. 
     A method to treat disorders mediated by PAF or leukotrienes is also disclosed, that includes administering an effective amount of one or more of the above-identified compounds or a pharmaceutically acceptable salt thereof, optionally in a pharmaceutically acceptable carrier.

This is a divisional of application U.S. Ser. No. 07/933,991 filed inthe U.S. Patent & Trademark Office on Aug. 24, 1992, now allowed, whichis a continuation-in-part of U.S. Ser. No. 07/912,788, filed on Jul. 13,1992 by Xiong Cai, Sajjat Hussoin, San-Bao Hwang, David Killian and T.Y. Shen for "COMPOUNDS AND METHODS FOR THE TREATMENT OF DISORDERSMEDIATED BY PLATELET ACTIVIATING FACTOR OR PRODUCTS OF 5-LIPOXYGENASE"(now U.S. Pat. No. 5,358,938).

BACKGROUND OF THE INVENTION

This invention is in the area of pharmaceutical compositions and methodsfor the treatment of inflammatory and immune disorders, and specificallyprovides novel compounds that reduce the chemotaxis and respiratoryburst leading to the formation of damaging oxygen radicals ofpolymorphonuclear leukocytes during an inflammatory or immune response.The compounds exhibit this biological activity by acting as PAF receptorantagonists, by inhibiting the enzyme 5-lipoxygenase, or by exhibitingdual activity, i.e., by acting as both a PAF receptor antagonist andinhibitor of 5-lipoxygenase.

Platelet activating factor (PAF,1-O-alkyl-2-acetyl-sn-glycerol-3-phosphorylcholine) is a potentinflammatory phospholipid mediator with a wide variety of biologicalactivities. PAF was initially identified as a water soluble compoundreleased by immunoglobulin E (IgE)-sensitized rabbit basophils. It isnow known that PAF is also generated and released by monocytes,macrophages, polymorphonuclear leukocytes (PMNs), eosinophils,neutrophils, natural killer lymphocytes, platelets and endothelialcells, as well as by renal and cardiac tissues under appropriateimmunological and non-immunological stimulation. (Hwang, "Specificreceptors of platelet-activating factor, receptor heterogeneity, andsignal transduction mechanisms", Journal of Lipid Mediators 2, 123(1990)). PAF causes the aggregation and degranulation of platelets atvery low concentrations. The potency (active at 10¹² to 10⁹ M), tissuelevel (picomoles) and short plasma half life (2-4 minutes) of PAF aresimilar to those of other lipid mediators such as thromboxane A₂,prostaglandins, and leukotrienes.

PAF mediates biological responses by binding to specific PAF receptorsfound in a wide variety of cells and tissues. Structure-activity studieson PAF and its analogs indicate that the ability of PAF to bind to thesereceptors is highly structure specific and stereospecific. (Shen, etal., "The Chemical and Biological Properties of PAF Agonists,Antagonists, and Biosynthetic Inhibitors", Platelet-Activating Factorand Related Lipid Mediators, F. Snyder, Ed. Plenum Press, New York, N.Y.153 (1987)).

While PAF mediates essential biological responses, it also appears toplay a role in pathological immune and inflammatory responses. Manypublished studies have provided evidence for the involvement of PAF inhuman diseases, including arthritis, acute inflammation, asthma,endotoxic shock, pain, psoriasis, ophthalmic inflammation, ischemia,gastrointestinal ulceration, myocardial infarction, inflammatory boweldiseases, and acute respiratory distress syndrome. Animal models alsodemonstrate that PAF is produced or increased in certain pathologicalstates.

The involvement of PAF in pathological inflammatory and immune stateshas stimulated a substantial research effort to identify PAF receptorantagonists. In 1983, a phospholipid analog referred to as CV-3988(rac-3-(N-n-octadecyl-carbamoyloxy-w-methoxypropyl-2-thiazolioethylphosphate) was reported to have PAF receptor antagonist properties.(Terashita, et al., Life Sciences 32, 1975 (1983).) In other early workin this area, Shen, et al., (in Proc. Natl. Acad. Sci, (U.S.A.) 82, 672(1985)), reported that kadsurenone, a neolignan derivative isolated fromPiper futokadsura Sieb et Zucc (a Chinese herbal plant) was a potent,specific and competitive inhibitor of PAF activity at the receptorlevel.

Hwang, et al., disclosed in 1985 thattrans-2,5-bis-(3,4,5-trirnethoxyphenyl) tetrahydrofuran (L-652,731)inhibits the binding of tritiated PAF to PAF receptor sites. (Hwang, etal., "Trans-2,5-bis-(3,4,5-trimethoxyphenyl)tetrahydrofuran", Journal ofBiological Chemistry 260, 15639 (1985).) L-652,731 was found to beorally active, and to inhibit PAF-induced rat cutaneous vascularpermeability at a dosage of 30 mg/kg body weight. The compound was foundto have no effect on the enzyme 5-lipoxygenase. Hwang, et al. alsoreported that trans-L-652,731 (wherein the aryl groups at the 2 and 5positions are on opposite sides of the plane of the tetrahydrofuranring) is approximately 1000 times more potent than cis-L-652,731(wherein the 2 and 5 aryl substituents are on the same side of the planeof the tetrahydrofuran ring).

In 1988, Hwang, et al., reported that L-659,989(trans-2-(3-methoxy-4-propoxyphenyl-5methylsulfonyl)-5-(3,4,5-trimethoxyphenyl)tetrahydrofuran)is an orally active, potent, competitive PAF receptor antagonist, withan equilibrium inhibition constant 10 times greater than that oftrans-L-652,731. (Hwang, et al., J. Pharmacol. Ther. 246, 534 (1988).)

U.S. Pat. Nos. 4,996,203, 5,001,123 and 4,539,332 to Biftu, et al. andEuropean Patent Application Nos. 89202593.3, 90306235.4, and 90306234.7discloses that a specific class of 2,5-diaryl tetrahydrofurans are PAFreceptor antagonists.

Leukotrienes, like PAF, are potent local mediators, playing a major rolein inflammatory and allergic responses, including arthritis, asthma,psoriasis, and thrombotic disease. Leukotrienes are straight chaineicosanoids produced by the oxidation of arachidonic acid bylipoxygenases. Arachidonic acid is oxidized by 5-lipoxygenase to thehydroperoxide 5-hydroperoxyeicosatetraenoic acid (5-HPETE), that isconverted to leukotriene A₄, that in turn can be converted toleukotriene B₄, C₄, or D₄. The slow-reacting substance of anaphylaxis isnow known to be a mixture of leukotrienes C₄, D₄, and E₄, all of whichare potent bronchoconstrictors. There has been a research effort todevelop specific receptor antagonists or inhibitors of leukotienebiosynthesis, to prevent or minimize pathogenic inflammatory responsesmediated by these compounds.

Leukotrienes are released simultaneously from leukocytes with PAF,possibly from a common phospholipid precursor such as1-O-hexadecyl-2-arachidonyl-sn-glycero-phosphocholine, and upon cellularactivation, act synergistically with PAF in many biological models.Recently, it was reported that the tetrahydrothiophene derivative ofL-652,731, trans-2,5-bis-(3,4,5-trimethoxyphenyl)tetrahydrothiophene(L-653,150), is a potent PAF antagonist and a moderate inhibitor of5-lipoxygenase. It has been disclosed that certain 2,5-diaryltetrahydrothiophenes are PAF antagonists and leukotriene synthesisinhibitors. (Biftu, et al., Abstr. of 6^(th) Int. Conf. onProstaglandins and Related Compounds, Jun. 3-6, 1986, Florence, Italy;U.S. Pat. No. 4,757,084 to Biftu)

Given the significant number of pathological immune and inflammatoryresponses that are mediated by PAF and leukotrienes, there remains aneed to identify new compounds and compositions that exhibit PAFreceptor antagonistic activity or inhibit the enzyme 5-lipoxygenase.European Patent Application Nos. 90117171.0 and 901170171.0 discloseindole, benzofuran, and benzothiphene lipoxygenase inhibiting compounds.

Therefore, it is an object of the present invention to provide compoundsthat reduce the chemotaxis and respiratory burst leading to theformation of damaging oxygen radicals during an inflammatory or immuneresponse.

It is another object of the present invention to provide pharmaceuticalcompositions for the treatment of pathological immune or inflammatorydisorders mediated by PAF or products of 5-lipoxygenase.

It is another object of the present invention to provide a method forthe treatment of pathological immune or inflammatory disorders mediatedby PAF or products of 5-lipoxygenase.

SUMMARY OF THE INVENTION

2,5-Diaryl tetrahydrothiophenes, tetrahydrofurans, and pyrrolidines,1,3-diaryl cyclopentanes, and 2,diaryl tetrahydrothiophenes,tetrahydrofurans and pyrrolidines are disclosed of the structures:

wherein:

X is O, S, S(O), S(O)₂, CR⁹, or NR¹⁰ ;

W is independently:

(1) --AN(OM)C(O)N(R³)R⁴, --AN(R³)C(O)N(OM)R⁴, --AN(OM)C(O)R⁴,--AC(O)N(OM)R⁴, --N(OM)C(O)N(R³)R⁴, --N(R³)C(O)N(OM)R⁴, --N(OM)C(O)R⁴,--C(O)N(OM)R⁴, --OR⁶ N(R⁵)R⁶ --(C₅ H₄ N)R⁶ R⁷, --OR⁶ N(COR⁵)R⁶ --(C₅ H₄N)R⁶ R⁷, --OR⁶ OC(O)N(COR⁵)R⁶ --(C₅ H₄ N)R⁶ R⁷, --OR⁶ O(CO)N(CO₂ R⁶)R⁶(C₅ H₄ N)R⁶ R⁷, --A(C₅ H₄ N)R⁶ R⁷, or --OR⁶ N(CO₂ R⁵)R⁶ --(C₅ H₄ N)R⁶ R⁷;

(2) an amidohydroxyurea of the formula:--N(R¹⁹)C(O)C(R¹⁹)N(OM)C(O)NHR²⁰, --C(O)N(R¹⁹)C(R¹⁹)N(OM)C(O)NHR²⁰,--AN(R¹⁹)C(O)C(R¹⁹)N(OM)C(O)NHR²⁰, --AC(O)N(R¹⁹)C(R¹⁹)N(OM)C(O)NHR²⁰,--NHC(O)N(OM)C(R¹⁹)C(O)N(R¹⁹)₂ ; or --NHC(O)N(OM)C(R¹⁹)N(R¹⁹)C(O)R¹⁹ ;

(3) an oxalkane of the structure: ##STR1## wherein n and m areindependently 1-4; (4) a thioalkane of the structure: ##STR2##

or (5) a quinolylmethoxy of the structure: ##STR3## n is 1 or 2; m is1,2or 3;

p is 0 or 1;

A is alkyl, alkenyl, alkynyl, alkyaryl, aralkyl, halo lower alkyl, halolower alkenyl, halo lower alkynyl, --C₁₋₁₀ alkyl(oxy)C₁₋₁₀ alkyl,--C¹⁻¹⁰ alkyl(thio)C₁₋₁₀ alkyl, --N(R³)C(O)alkyl, --N(R³)C(O)alkenyl,--N(R³)C(O)alkynyl, --N(R³)C(O)(alkyl)oxy(alkyl),--N(R³)C(O)(alkyl)thio(alkyl), --N(R³)C(O)N(alkyl),--N(R³)C(O)N(alkenyl), --N(R³)C(O)N(alkynyl),--N(R³)C(O)N(alkyl)oxy(alkyl), --N(R³)C(O)N(alkyl)thio(alkyl),--N(R³)C(O₂)alkyl, --N(R³)C(O₂)alkenyl, --N(R³)C(O₂)alkynyl,--N(R³)C(O²)(alkyl)oxy(alkyl), --N(R³)C(O₂)(alkyl)thio(alkyl),--OC(O₂)alkyl, --OC(O₂)alkenyl, --OC(O₂)alkynyl,--OC(O₂)(alkyl)oxy(alkyl), --OC(O₂)(alkyl)thio(alkyl), --N(R³)C(S)alkyl,--N(R³)C(S)alkenyl, --N(R³)C(S)alkynyl, --N(R³)C(S)(alkyl)oxy(alkyl),--N(R³)C(S)(alkyl)thio(alkyl), --N(R³)C(S)N(alkyl),--N(R³)C(S)N(alkenyl), --N(R³)C(S)N(alkynyl),--N(R³)C(S)N(alkyl)oxy(alkyl), --N(R³)C(S)N(alkyl)thio(alkyl),--N(R³)C(S)S(alkyl), --N(R³)C(S)S(alkenyl), --N(R³)C(S)S(alkynyl),--N(R³)C(S)S(alkyl)oxy(alkyl), --N(R³)C(S)S(alkyl)thio(alkyl), --SC(S)S(alkyl), --SC(S)S(alkenyl), --SC(S)S(alkynyl),--SC(S)S(alkyl)oxy(alkyl), and --SC(S )S (alkyl)thio(alkyl);

M is hydrogen, a pharmaceutically acceptable cation, or a metabolicallycleavable leaving group;

Y is independently:

(a) hydrogen;

(b) R¹⁻⁶, R⁸, R¹⁰, --OR³, --OR¹¹, --OR¹², R³ S--, R⁵ S--, R³ SO--, R⁵SO--, R³ SO₂ --, R⁵ SO₂ --, CF₃ O--, CF₃ S--, CF₃ SO--, --CF₃ SO₂,--OCH₂ oxycyclopropyl, --OCH₂ C(O)OR³, --OCH₂ OR³, --OCH₂ C(O)R³, --OCH₂C₃₋₈ cycloalkyl, --OCH₂ CH(R)R³, --OCH₂ cyclopropyl, --OCH₂ --aryl,--OCH₂ CH(OH)CH₂ OH, aryl--CH₂ --SO₂ --, (R³)₂ CHCH₂ SO₂ --, --CH₂CH(OH)CH₂ OH, CF₃ SO₂ --, R³ R⁴ --, --OCH₂ CO₂ R³, --NR³ COR³, --OCONH₂,--OCONR³ R⁴, --CONH ₂, --CONR³ R⁴, --CR³ R³ R⁴, --SO₂ NR³ R⁴, --SONR³R⁴, --CH₃ O CH₂ NR³ R⁶, --SNR³ R⁴, --CO₂ R³, --NR³ R⁴ SO₂ R³, --NR³ R⁴SOR, --COR³, --CONR ³, --NO₂, --CN, --N(R⁵)CONR³ R⁴, --CH₂ N(R⁵)CONR³R⁴, --R⁶ NR³ R⁴, --OR⁶ NR³ R⁴, --O(O)CR⁵, --O(O)CNR³ R⁴, --OR⁶ n, --SR⁶NR³ R⁴, --S(O)R⁶ NR³ R⁴, --SO₂ R⁶ NR³ R⁴, --SO₂ OR⁶ CO n, --SR⁶ OH,--S(O)R⁶ OH, --SO₂ R⁶ OH, --OR⁶ OC(O)N(CO₂ R⁶)R⁶ ;

(c) a heterocycle, including but not limited to, pyrryl, furyl, pyridyl;1,2,4-thiadiazolyl; pyrimidyl, thienyl, isothiazolyl, imidazolyl,tetrazolyl, pyrazinyl, pyrimidyl, quinolyl, isoquinolyl, benzothienyl,isobenzofuryl, pyrazolyl, indolyl, purinyl, carbozolyl, benzimidazolyl,and isoxazolyl and the like, optionally substituted with a groupdescribed in Y section (b); ##STR4## wherein X' is halo, --C(O)aryl,CF₃, or OR³ ; --NR₃ COR³ ; --OCONH₂ ; --CR³ R³ R⁴ ; --CH₂ OR³ ; --CH₂OR³ ; --CH₂ CO ₂ R³ ; --CH₂ OCOR³ ; R³ CH(R³)CH₂ SO₃ --; --NHCH₂ COOR³ ;halo such as F, Cl, Br and I; N+R³ R³ R⁴ R⁷ ; --NR³ SO₂ R³ ; COR³ ; NO₂; or CN;

or ##STR5## wherein R¹³, R¹⁴ and R¹⁵ independently represents: BO--wherein B is --CH₂ -oxacyclopropyl, --CH₂ OR³, --CH₂ C(O)R³, --CH₂CH(R³)R³, --CH₂ Aryl, --CH₂ CH(OH)--CH₂ OH; R³ C(R³)₂ CH₂ SO₂ ; or R¹³-R¹⁴ or R¹⁴ -R¹⁵ are joined together to form a bridge such as --OCHR²CHR² --S(O)_(n-) wherein n is 0 to 3; or ##STR6## where X' is halo,--C(O)aryl, --CF₃, or --OR³ ; --CH₂ OR³ ; --CH₂ CO₂ R³ ; --CH₂ COR³ ;--NHCH₂ COOR³ ; --N+R³ R³ R⁴ R⁷.

R¹ and R² are independently hydrogen, halogen, or lower alkyl,specifically including lower alkyl of 1-6 carbon atoms, e.g., methyl,cyclopropylmethyl, ethyl, isopropyl, butyl, pentyl and hexyl, as well asC₃₋₈ cycloalkyl, for example, cyclopentyl; halo lower alkyl especiallyC₁₋₆ haloalkyl, for example, trifluoromethyl; halo especially fluoro;--COOH; --CONR¹⁶ R¹⁷ wherein R¹⁶ and R¹⁷ independently represent C₁₋₆alkyl and hydrogen, --COOR³, lower alkenyl especially C₂₋₆ alkenyl e.g.,vinyl, allyl, CH₃ CH═CH--CH₂ --CH₂, and CH₃ CH₂)--₃ CH═CH--; --COR³ ;--CH₂ OR³ ; lower alkynyl especially C₂₋₆ alkynyl e.g., --C═CH; --CH₂NR⁴ R³ ; --CH₂ SR³ ; ═O; --OR³ ; or --NR³ R⁴ ;

R³ and R⁴ are independently alkyl, alkenyl, alkynyl, aryl, aralkyl,alkyaryl, hydrogen, C₁₋₆ alkoxy--C₁₋₁₀ alkyl, C₁₋₆ alkylthio--C₁₋₁₀alkyl, and C₁₋₁₀ substituted alkyl (wherein the substituent isindependently hydroxy or carbonyl, located on any of C₁₋₁₀);

R⁵ is lower alkyl, lower alkenyl, lower alkynyl, hydroxyl, hydrogen,halo lower alkyl, halo lower alkenyl, halo lower alkynyl, aralkyl, oraryl;

R⁶ is lower alkyl, lower alkenyl, lower alkynyl, aralkyl, halo loweralkyl, halo lower alkenyl, halo lower alkynyl, or aryl;

R⁷ is an organic or inorganic anion;

R⁸ is halo alkyl, halo lower alkyl, halo lower alkenyl, halo loweralkynyl, lower alkenyl, lower alkynyl, aralkyl, or aryl;

R⁹ is independently hydrogen, halogen, lower alkyl, halo lower alkyl,lower alkenyl, lower alkynyl, --CONR³ R⁴, --COR⁵, --CO₂ R⁵, --CH₂ OR⁵,--CH₂ NR⁵ R⁵, --CH₂ SR⁵, ═O, ═NR⁵, --NR³ R⁴, --NR³ R⁴ R⁷, or --OR⁵,

R¹⁰ is --R³, --R⁸, --C(O)N(OR³)R³, or --OR³.

R¹¹ is C₁ to C₁₂ alkyl; substituted C₁ to C₁₂ alkyl wherein thesubstituent is selected from the group consisting of hydroxy and amino,alkenyl, lower alkoxy-alkyl; alkylcarbonylalkyl, -alkylamino,-alkylamino(alkyl or dialkyl), lower alkyl S(O)_(m) -lower alkyl inwhich m is 0, 1 or 2; imidazolyl lower alkyl, morpholinyl lower alkyl,thiazolinyl lower alkyl, piperidinyl lower alkyl, imidazolylcarbonyl,morpholinyl carbonyl, amorpholinyl (lower alkyl) aminocarbonyl,N-pyrrylpyridinyl-lower alkyl; pyridylthio-lower alkyl;morpholinyl-lower alkyl; hydroxyphenylthio-lower alkyl;cyanophenylthio-lower alkyl; imidazolylthio-lower alkyl;triazolylthio-lower alkyl; triazolylphenylthio-lower alkyl;tetrazolylthio-lower alkyl; tetrazolylphenylthio-lower alkyl;aminophenylthio-lower alkyl; N,N-di-substituted aminophenylthio-loweralkyl wherein the substituents each independently represent lower alkyl;amidinophenylthio-lower alkyl; phenylsulfinyl-lower alkyl; orphenylsulfonyl lower alkyl;

R¹² is alkyl; substituted alkyl wherein the substituent is selected fromthe group consisting of hydroxy and amino; -lower alkyl-O--R¹⁸, whereinR¹⁸ is --PO₂ (OH)--M+ or --PO₃ (M+)₂, wherein M+ is a pharmaceuticallyacceptable cation; --C(O)(CH₂)₂ CO₂ --M+, or --SO₃ --M+; -loweralkylcarbonyl-lower alkyl; -carboxy lower alkyl; -lower alkylamino-loweralkyl; N,N-di-substituted amino lower alkyl-, wherein the substituentseach independently represent lower alkyl; pyridyl-lower alkyl;imidazolyl-lower alkyl; imidazolyl-Y-lower alkyl wherein Y is thio oramino; morpholinyl-lower alkyl; pyrrolidinyl-lower alkyl;thiazolinyl-lower alkyl; piperidinyl-lower alkyl; morpholinyl-lowerhydroxyalkyl; N-pyrryl; piperazinyl-lower alkyl; N-substitutedpiperazinyl-lower alkyl, wherein the substituent is lower alkyl;triazolyl-lower alkyl; tetrazolyl-lower alkyl; tetrazolylamino-loweralkyl; or thiazolyl-lower alkyl;

R¹⁹ is H, lower alkyl, or lower alkenyl; and

R²⁰ is H, halogen, lower alkoxy, or lower alkyl. ##STR7## Ar³ and Ar⁴are independently ##STR8## wherein: X is O, S, S(O), S(O)₂, or NR¹⁰ ;

m is 1, 2, or 3;

t is 1, 2, 3, or 4;

Z is independently W or Y; and ##STR9## wherein Ar⁵ is: ##STR10##wherein Ar⁶ is: ##STR11## v is 0, 1, or 2; and Q is selected from thegroup consisting of substituted C₁ to C₁₂ alkyl wherein the substituentis selected from the group consisting of hydroxy and amino,alkylcarbonylalkyl, alkyl; lower alkyl S(O)_(m) -lower alkyl in which mis 1 or 2; imidazolyl lower alkyl, morpholinyl lower alkyl, thiazolinyllower alkyl, piperidinyl ower alkyl, imidazolylcarbonyl, morpholinylcarbonyl, amorpholinyl (lower alkyl) aminocarbonyl,N-pyrrylpyridinyl-lower alkyl; pyridylthio-lower alkyl;morpholinyl-lower alkyl; hydroxyphenylthio-lower alkyl;cyanophenylthio-lower alkyl; iridazolylthio-lower alkyl;triazolylthio-lower alkyl; triazolylphenylthio-lower alkyl;tetrazolylthio-lower alkyl; tetrazolylphenylthio-lower alkyl;aminophenylthio-lower alkyl; N,N-di-substituted aminophenylthio-loweralkyl wherein the amine substituents each independently represent loweralkyl; amidinophenylthio-lower alkyl; phenylsulfinyl-lower alkyl; orphenylsulfonyl lower alkyl; -lower alkyl-O--R¹⁸, wherein R¹⁸ is --PO₂(OH)--M+ or --PO₃ (M+)₂, wherein M+ is a pharmaceutically acceptablecation; --C(O)(CH₂)₂ CO₂ --M+, or --SO₃ --M+; -lower alkylcarbonyl-loweralkyl; -carboxy lower alkyl; -lower alkylamino-lower alkyl;N,N-di-substituted amino lower alkyl, wherein the amine substituentseach independently represent lower alkyl; pyridyl-lower alkyl;imidazolyl-lower alkyl; imidazolyl-Y-lower alkyl wherein Y is thio oramino; morpholinyl-lower alkyl; pyrrolidinyl-lower alkyl;thiazolinyl-lower alkyl; piperidinyl-lower alkyl; morpholinyl-lowerhydroxyalkyl; N-pyrryl; piperazinyl-lower alkyl; N-substitutedpiperazinyl-lower alkyl, wherein the amine substituent is lower alkyl;triazolyl-lower alkyl; tetrazolyl-lower alkyl; tetrazolylamino-loweralkyl; or thiazolyl-lower alkyl.

These compounds in general reduce the chemotaxis and respiratory burstleading to the formation of damaging oxygen radicals ofpolymorphonuclear leukocytes during an inflammatory or immune response.The compounds exhibit this biological activity by acting as PAF receptorantagonists, by inhibiting the enzyme 5-lipoxygenase, or by exhibitingdual activity, i.e., by acting as both a PAF receptor antagonist andinhibitor of 5-lipoxygenase.

A method to treat disorders mediated by PAF or leukotrienes is alsodisclosed, that includes administering an effective amount of one ormore of the above-identified compounds or a pharmaceutically acceptablesalt thereof, optionally in a pharmaceutically acceptable carrier.

Examples of immune and allergic disorders include general inflammation,cardiovascular disorders, skeletal-muscular disorders, osteoarthritis,gout, asthma, lung edema, adult respiratory distress syndrome, pain,aggregation of platelets, rheumatoid arthritis, juvenile rheumatoidarthritis, psoriatic arthritis, psoriasis, autoimmune uveitis, allergicencephalomyelitis, systemic lupus erythematosis, acute necrotizinghemorrhagic encephalopathy, idiopathic thrombocytopenia, polychondritis,chronic active hepatitis, idiopathic sprue, Crohn's disease, Gravesophthalmopathy, primary biliary cirrhosis, uveitis posterior,interstitial lung fibrosis; allergic asthma; and inappropriate allergicresponses to environmental stimuli such as poison ivy, pollen, insectstings and certain foods, including atopic dermatitis and contactdermatitis.

The compounds disclosed herein can also be used as research tools tostudy the structure and location of PAF receptors as well as biologicalpathways involving leukotrienes.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic illustration of a process for a preparation of3,4,5-trimethoxyphenylvinylketone (compound 106, FIG. 1).

FIG. 2 is a schematic illustration of a process for a preparation oftrans-2-(3,4-dimethoxy-5-aninoethylthiophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene (compound 1, FIG. 2) andtrans-2-(3,4-dimethoxy-5-aminoethylsulfonylphenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene (compound2, FIG. 2).

FIG. 3 is a schematic illustration of a process for a preparation oftrans-2-(3-methoxy-4-propoxy-5-aminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(compound 122, FIG. 3), trans-2-(3,4-dimethoxy-5-aminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene (compound 123, FIG. 3), andtrans-2-(3-methoxy-4-propoxy-5-aminophenyl)-5-(3,4,5-trimethoxyphenyl)tetrahydrothiophene (compound 124, FIG. 3).

FIG. 4 is a schematic illustration of a process for the preparation oftrans-2-(3-methoxy-4-propoxy-5-benzylaminophenyl)-5-(3,4,5-trimethoxyphenyl)tetrahydrofuran (compound 3, FIG.4),trans-2-(3-methoxy-4-propoxy-5-hydroxyethylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran (compound 4, FIG. 4),trans-2-(3-methoxy-4-propoxy-5-N,N-diallyiaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(compound 5, FIG. 4), trans-2-(3,4-dimethoxy-5-benzylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene (compound 6),trans-2-(3-methoxy-4-propoxy-5-benzylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene(compound 7, FIG. 4),trans-2-(3,4-dimethoxy-5-hydroxyethylaminophenyl)-5-(3,4,5-trimethoxyphenyl)tetrahydrothiophene (compound 8, FIG. 4),trans-2-(3-methoxy-4-propoxy-5-hydroxyethylaminoph-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene(compound 9, FIG. 4),trans-2-(3,4-dimethoxy-5-N-diallylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene(compound 10, FIG. 4), and trans-2-(3-methoxy-4-propoxy-5-N,N-diallylaminophenyl)-5-(3,4,5-trimethoxyphenyl) tetrahydrothiophene(compound 11, FIG. 4), and cis- and trans-2- 5-(N'-substituted-N'-substitutedureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)tetrahydrofuranor tetrahydrothiophene (compounds 12-32 and 38-41, FIG. 4).

FIG. 5 is a schematic illustration of a process for the preparation oftrans-2-(3-methoxy-4-propoxy-5-hydroxyethylsulfonyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene (compound 38).

FIG. 6 is a schematic illustration of a process for the preparation oftrans-2-(5-(N-hydroxy-N-(substituted)-aminocarbonyl)-aminomethyl-3-methoxy-4-propoxyphenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(compounds 33-37, FIG. 6).

FIG. 7 is a schematic illustration of a process for the preparation of1-(3-nitro-4-propoxy5-methoxyphenyl)-3-(3,4,5-trimethoxyphenyl)cyclopentane(compound 143, FIG. 7),1-(3-amino-4-propoxy-5-methoxyphenyl)-3-(3,4,5-trimethoxyphenyl)cyclopentane(compound 144, FIG. 7), and2-N'-hydroxyl-N'-(substituted)-N-(2-propoxy-3-methoxy-5-(5-(3,4,5-trimethoxyphenyl)cyclopentane) phenyl urea (compound 145, FIG. 7).

FIG. 8 is a schematic illustration of a process for the preparation of2-(5-(N-hydroxy-N-methylaminocarbonyl)-amino(substituted)-3-methoxy-4-propoxy)-5-(3,4,5-trimethoxyphenyl)-cyclopentane(compound 158, FIG. 8).

FIG. 9 is a schematic illustration of a process for the preparation of2-(5-(N-hydroxy-N-methylaminocarbonyl)-amino(substituted)-3-methoxy-4-propoxy)-4-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(compound 167, FIG. 9), and 2-(5-(N-hydroxy-N-methylaminocarbonyl)-amino(substituted)-3-methoxy-4-propoxy)-4-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene(compound 168, FIG. 9).

DETAILED DESCRIPTION OF THE INVENTION I. Description and Synthesis ofthe Compounds

A. Compounds

The term alkyl, as used herein, unless otherwise specified, refers to asaturated straight, branched, or cyclic hydrocarbon of C₁ to C₁₀, andspecifically includes methyl, ethyl, propyl, isopropyl, butyl, isobutyl,t-butyl, pentyl, cyclopentyl, isopentyl, neopentyl, hexyl, isohexyl,cyclohexyl, 3-methylpentyl, 2,2-dimethylbutyl, and 2,3-dimethylbutyl.

The term lower alkyl, as used herein, and unless otherwise specified,refers to a C₁ to C₆ saturated straight, branched, or cyclic (in thecase of C₅₋₆) hydrocarbon, and specifically includes methyl, ethyl,propyl, isopropyl, butyl, isobutyl, t-butyl, pentyl, cyclopentyl,isopentyl, neopentyl, hexyl, isohexyl, cyclohexyl, 3-methylpentyl,2,2-dimethylbutyl, and 2,3-dimethylbutyl.

The term alkenyl, as referred to herein, and unless otherwise specified,refers to a straight, branched, or cyclic (in the case of C₅₋₆)hydrocarbon of C₂ to C₁₀ with at least one double bond.

The term lower alkenyl, as referred to herein, and unless otherwisespecified, refers to an alkenyl group of C₂ to C₆, and specificallyincludes vinyl and allyl.

The tern lower alkylamino refers to an amino group that has one or twolower alkyl substituents.

The term alkynyl, as referred to herein, and unless otherwise specified,refers to a C₂ to C₁₀ straight or branched hydrocarbon with at least onetriple bond.

The term lower alkynyl, as referred to herein, and unless otherwisespecified, refers to a C₂ to C₆ alkynyl group, specifically includingacetylenyl and propynyl.

The term aryl, as used herein, and unless otherwise specified, refers tophenyl or substituted phenyl, wherein the substituent is halo or loweralkyl.

The term halo, as used herein, includes fluoro, chloro, bromo, and iodo.

The term halo (alkyl, alkenyl, or alkynyl) refers to a (alkyl, alkenyl,or alknyl) group in which at least one of the hydrogens in the group hasbeen replaced with a halogen atom.

The term aralkyl refers to an aryl group with an alkyl substituent.

The term alkaryl refers to an alkyl group that has an aryl substituent.

The term organic or inorganic anion refers to an organic or inorganicmoiety that carries a negative charge and can be used as the negativeportion of a salt.

The term "pharmaceutically acceptable cation" refers to an organic orinorganic moiety that carries a positive charge and that can beadministered in association with a pharmaceutical agent, for example, asa countercation in a salt. Pharmaceutically acceptable cations are knownto those of skill in the art, and include but are not limited to sodium,potassium, and quaternary amine.

The term "metabolically cleavable leaving group" refers to a moiety thatcan be cleaved in vivo from the molecule to which it is attached, andincludes but is not limited to an organic or inorganic anion, apharmaceutically acceptable cation, acyl (for example (alkyl)C(O),including acetyl, propionyl, and butyryl), alkyl, phosphate, sulfate andsulfonate.

The term "enantiomerically enriched composition or compound" refers to acomposition or compound that includes at least 95% by weight of a singleenantiomer of the compound.

The term PAF receptor antagonist refers to a compound that binds to aPAF receptor with a binding constant of 30 μM or lower.

The term 5-lipoxygenase inhibitor refers to a compound that inhibits theenzyme at 30 μM or lower in a broken cell system.

The term pharmaceutically active derivative refers to any compound thatupon administration to the recipient, is capable of providing directlyor indirectly, the compounds disclosed herein.

The 2,5-diaryl tetrahydrothiophenes, pyrrolidines, and tetrahydrofurans,1,3 diaryl cyclopentanes, and the 2,4-diaryl tetrahydrothiophenes,pyrrolidines and tetrahydrofurans of the above-defined formulas exhibitPAF receptor antagonist activity or inhibit the enzyme 5-lipoxygenase,or have dual activity, and are thus useful in the treatment of humanswho have immune and allergic disorders that are mediated by PAF orproducts of 5-lipoxygenase.

The following are nonlimiting examples of compounds that fall withinFormulas I, II, and III. These examples are merely exemplary, and arenot intended to limit the scope of the invention.

Formula I

cis and trans Isomers of the following compounds:

N-Alkyl/arylhydroxyureas

2- 5-(N'-Butyl-N'-hydroxyureidyl)-3-methoxy-4-methoxyethoxyphenyl!-5-(3,4,5-trimethoxy phenyl)-tetrahydrothiophene.

2-5-(N'-Butyl-N'-hydroxyureidyl)-3-methoxy-4-methoxythioethoxyphenyl!-5-(3,4,5-tri-methoxyphenyl)-trahydrofuran.

2-5-(N'-Butyl-N'-hydroxyureidyl)-4-hydroxyphenylthioethoxy-3-methoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-Butyl-N'-hydroxyureidyl)-4-(N-nicotinoyl-N-phenylaminoethoxy)-3-methoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-Butyl-N'-hydroxyureidyl)-4-(N-3-pyridiniumcarbonyl-N-phenylaminoethoxy)-3-methoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran-propyliodide.

2-5-(N'-p-Chlorophenyl-N'-hydroxyureidyl)-4-(N-3-pyridiniumcarbonyl-N-phenylaminoethoxy)-3-methoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran-propyliodide.

2-5-(N'-Butyl-N'-hydroxyureidyl)-4-(N-3-pyridiniumcarbonyl-N-phenylaminoethoxy)-3-methoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran-ethyliodide.

2-5-(N'-p-Chlorophenyl-N'-hydroxyureidyl)-4-(N-3-pyridiniumcarbonyl-N-phenylaminoethoxy)-3-methoxyphenyl!-5-(3,4,5-trirnethoxyphenyl)-tetrahydrofuran-ethyliodide.

2-5-(N'-p-Chlorophenyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-p-Chlorophenyl-N'-hydroxyureidyl)-4-methoxyethoxy-3-methoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2-5-(N'-p-Chlorophenyl-N'-hydroxyureidyl)-4-methylthioethoxy-3-methoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-p-Chlorophenyl-N'-hydroxyureidyl)-4-p-hydroxyphenylthioethoxy-3-methoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-p-Chlorophenyl-N'-hydroxyureidyl)-4-(N-nicotinoyl-N-phenylaminoethoxy)-3-meth-oxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-Butyl-N'-hydroxyureidyl)-4-p-cyanophenylthioethoxy-3-methoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-p-Chlorophenyl-N'-hydroxyureidyl)-4-p-cyanophenylthioethoxy-3-methoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-Butyl-N'-hydroxyueidyl)-4-p-methoxyphenylthioethoxy-3-methoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-p-Chlorophenyl-N'-hydroxyureidyl)-4-p-methoxyphenylthioethoxy-3-methoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-tert-Butyl-N'-hydroxyueidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2-5-(N'-n-Butyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl) -tetrahydrofuran.

2-5-(N'-Ethyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-Cyclohexyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-Benzyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-tiimethoxyphenyl)-tetrahydrofuran.

2-(5-N'-Hydroxyureidyl-3-methoxy-4-propoxyphenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2-5-(N'-Hydroxy-N'-methylureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2-5-(N'-Hydroxy-N'-i-propylureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2-5-(N'-sec-Butyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyltetrahydrothiophene.

2-5-(N'-Hydroxy-N'-propylureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2-5-(N'-Hydroxy-N'-propylureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-Hydroxy-N'-n-pentylureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-Cyclohexyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-Hexyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-Benzyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-Hydroxy-N'-octylureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-Hydroxy-N'-methoxyethylw-eidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-Decyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-5-(N'-Hydroxy-N'-n-pentylureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2-5-(N'-Cyclohexyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2- 5-(N'-Hexyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl )-tetrahydrothiophene.

2-5-(N'-Benzyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trmethoxyphenyl)-tetrahydrothiophene.

2-5-(N'-Hydroxy-N'-octylureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2-5-(N'-Hydroxy-N'-methoxyethylureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2-5-(N'-Decyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

Triple bonded hydroxamates

2- 5- 1-(N-Acetyl-N-hydroxyamino)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-tri-methoxyphenyl)-tetrahydrofuran

2- 5- 1-(N-Hydroxy-N-propanoylamino)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-1-(N-Butanoyl-N-hydroxyamino)propyn-3-yi-3-methoxy-4-propoxyphenyl!-5-(3,4,5methoxyphenyl)-tetrahydrofuran.

2- 5- 1-(N-Hydroxy-N-i-propanoylamino)propyn-3-yl!

-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-1-(N-Hydroxy-N-cyclohexanecarbonylanino)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-1-(N-Benzoyl-N-hydroxylamino)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-1-(N-hydroxy-N-3-phenoxybenzoylamino)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-1-(N-hydroxy-N-4-methoxybenzoylamino)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-1-(N-3-Benzoylbenzoyl-N-hydroxyamino)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-1-(N-Hydroxy-N-4-hydroxybenzoylamino)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-(3,4,5-trimethoxypheny)-tetrahydrofuran.

Triple bonded ureas

2- 5-1-(N'-Hydroxy-N'-methylureidyl)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-1-(N'-Ethyl-N'-hydroxyureidyl)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-1-(N'-Hydroxy-N'-propylureidyl)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-1(N'-n-Butyl-N'-hydroxyureidyl)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-1-(N'-Hydroxy-N'-i-propylureidyl)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-1-(N'-t-Butyl-N'-hydroxyureidyl)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-5-(methoxyphenyl)-tetrahydrofuran.

2- 5-1-(N'-Benzyl-N'-hydroxyureidyl)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-1-(N'-Cyclopropylmethyl-N'-hydroxyureidyl)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-1-(N'-Aflyl-N'-hydroxyureidyl)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-1-(N'-Hydroxy-N'-hydroxyethylureidyl)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

Double bonded hydroxamates: Both cis and trans isomers at thetetrahydrofuran ring

2- 5-trans-1-(N-Acetyl-N-hydroxyamino)propen-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-tri methoxyphenyl)-tetrahydrofuran.

2- 5-trans-1-(N-Hydroxy-N-propanoylamino)propen-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-trans-1-(N-Butanoyl-N-hydroxyamino)propen-3-yl!-3-methoxy-4-propoxyphenyl!-5(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5- trans-1-(N-hydroxy-N-nicotinoylamino)propen-3-yl!-3-methoxy-4-propoxyphenyl !-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-trans-1-(N-Hydroxy-N-phenylacetylamino)propen-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3, 4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-trans-1-(N-3-Phenoxybenzoyl-N-hydroxyamino)propen-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-trans-1-(N-3-Chlorobenzoyi-N-hydroxyaino)propen-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-trans-1-(N-3-Chlorobenzoyl-N-hydroxyamino)propen-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-trans-1-(N-2,4-Difluorobenzoyl-N-hydroxyamino)propen-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-trans-1-(N-3,4-Methylenedioxybenzoyl-N-hydroxyamino)propen-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trinmethoxyphenyl)-tetrahydrofuran.

and also the corresponding saturated hydroxamates, e.g.,

2- 5-1-(N-3,4-Methylenedioxybenzoyl-N-hydroxyamino)propyl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

Double bonded ureas: Both cis and trans isomer at the tetrahydrofuranring

2- 5-trans-1-(N'-Hydroxy-N'-methylureidyl)propen-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimthhoxyphenyl)-tetrahydrofuran.

2- 5- trans-1-(N'-Ethyl-N'-hydroxyureidyl)propen-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5- trans-1-(N'-Hydroxy-N'-propylureidyl)propen-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5- trans-1-(N'-Butyl-N'-hydroxyureidyl)propen-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5- trans-1-(N'-Hydroxy-N'-i-propylureidyl)propen-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5- trans-1-(N'-t-Butyl-N'-hydroxyureidyl)propen-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5- trans-1-(N'-Benzyl-N'-hydroxyureidyl)propen-3-yl!-N-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-trans-1-(N'-Allyl-N'-hydroxyureidyl)propen-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5- trans-1-(N'-Cyclohexyl-N'-hydroxyureidyl)propen-3-yl!-3-methoxy-4-propoxyphenyl!5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 5-trans-1-(N'-Hydroxy-N'-methylthioethylureidyl)propen-3-yl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.2- 5-trans-1-(N'-Cyclohexyl-N'-hydroxyureidyl)propen-3-yl!-3-methoxy-4-propoxy!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

and also the corresponding saturated ureas, e.g.,

2- 5-1(N'-Cyclohexyl-N'-hydroxyureidyl)propyl!-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

Formula II

cis and trans isomer of the following compounds:

N-Alkyl/arylhydroxyureas

4-5-(N'-Butyl-N'-hydroxyureidyl)-3-methoxy-4-methoxyethoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-Butyl-N'-hydroxyureidyl)-3-methoxy-4-methylthioethoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-Butyl-N'-hydroxyureidyl)-4-p-hydroxyphenylthioethoxy-3-methoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-Butyl-N'-hydroxyureidyl)-3-methoxy-4-(N-nicotinoyl-N-phenyaminoethoxy)-phenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4- 5-(N'-Butyl-N'-hydroxyureidyl)-3-methoxy-4- (N-(N-propyl-3-pyridiniumcarbonyl)!-N-phenyaminoethoxy)-phenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuraniodide

4-5-(N'-p-Chlorophenyl-N'-hydroxyureidyl)-3-methoxy-4-(N-(N-propyl-3-pyridiniumcarbonyl)-N-phenyaminoethoxy)-phenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuraniodide

4- 5-(N'-Butyl-N'-hydroxyureidyl)-3-methoxy-4-(N-(N-ethyl-3-pyridiniumcarbonyl)-N-phenyaminoethoxy)-phenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuraniodide

4-5-(N'-p-Chlorophenyl-N'-hydroxyureidyl)-3-methoxy-4-(N-(N-ethyl-3-pyridiniumcarbonyl)-N-phenyaminoethoxy)-phenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuraniodide

4- 5-(N'-p-Chlorophenyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-p-Chlorophenyl-N'-hydroxyureidyl)-3-methoxy-4-methoxyethoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-p-Chlorophenyl-N'-p-hydroxyureidyl)-3-methoxy-4-methylthioethoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofiran

4-5-(N'-p-Chlorophenyl-N'-hydroxyureidyl)-4-p-hydroxyphenylthioethoxy-3-methoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-p-Chlorophenyl-N'-hydroxyureidyl)-3-methoxy-4-(N-nicotinoyl-N-phenylaminoethoxy)-phenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-Butyl-N'-hydroxyureidyl)-4-p-cyanophenylthioethoxy-3-methoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-(5-(N'-p-Chlorophenyl-N'-hydroxyureidyl)-4-p-cyanophenylthioethoxy-3-methoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-Butyl-N'-hydroxyureidyl)-3-methoxy-4-p-methoxyphenylthioethoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-p-Chlorophenyl-N'-hydroxyureidyl)-3-methoxy-4-p-methoxyphenylthioethoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-tert-Butyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene

4-5-(N'-Butyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-Ethyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-Cyclohexyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-Benzyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-N'-Hydroxyureidyl-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene

4-5-(N'-Hydroxy-N'-methylureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene

4-5-(N'-Hydroxy-N'-i-propylureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene

4-5-(N'-sec-Butyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene

4-5-(N'-Hydroxy-N'-n-propylureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene

4-5-(N'-Hydroxy-N'-n-propylureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-Hydroxy-N'-n-pentylureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-Hydroxy-N'-n-pentylureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-Hydroxy-N'-n-pentylureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-Cyclohexyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-n-Hexyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-Benzyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene

4-5-(N'-Hydroxy-N'-n-octylureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4-5-(N'-Hydroxy-N'-methoxyethylureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran

4- 5-(N'-n-Decyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl )-tetahydrofuran

4-5-(N'-Hydroxy-N'-n-pentylureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene

4-5-(N'-Cyclohexyl-N'-hydroxylureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene

4-5-(N'-n-Hexyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene

4-5-(N'-Hydroxy-N'-n-octylureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tehahydrothiophene

4-5-(N'-Hydroxy-N'-methoxyethylureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene

4-5-(N'-n-Decyl-N'-hydroxylureidyl)-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetahydrothiophene

Triple bonded hydroxamates

4- 5- 1-(N-Acetyl-N-hydroxyamino)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-tri methoxyphenyl)-tetrahydrofuran.

4- 5-1-(N-Hydroxy-N-propanoylamino)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-tri methoxyphenyl)-tetrahydrofuran.

4- 5-1-(N-Butanoyl-N-hydroxyamino)propyn-3-yi!-3-methoxy-4-propoxyphenyl!-2-(3,4,5tri methoxyphenyl)-tetrahydrofuran.

4- 5- 1-(N-Hydroxy-N-i-propanoylamino)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetraydrofuran.

4- 5-1-(N-Cyclohexanecarbonyl-N-hydroxyamino)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5trimethoxyphenyl-tetrahydrafuran

4- 5- 1-(N-Benzoyl-N-hydroxylamino)propyn-3-yl!-3-methoxy-4propoxyphenyl!-2-(3,4,5-tri methoxyphenyl)-tetrahydrofuran.

4- 5- 1-(N-Hydroxy-N-3-phenoxyoxybenzoylamino)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-1-(N-Hydroxy-N-4-methoxybenzoylamino)propyn-3-yi!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-1-(N-3-Benzoyl-N-hydroxyamino)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-1-(N-Hydroxy-N-4-hydroxybenzoylamino)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

Triple bonded ureas

4- 5-1-(N'-Hydroxy-N'-methylureidyl)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-1-(N'-Ethyl-N'-hydroxyureidyl)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-1-(N'-Hydroxy-N'-propylureidyl)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-1(N'-n-Butyl-N'-hydroxyureidyl)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-1-(N'-Hydroxy-N'-i-propylureidyl)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-1-(N'-t-Butyl-N'-hydroxyureidyl)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-1-(N'-Benzyl-N'-hydroxyureidyl)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-1-(N'-Cyclopropylmethyl-N'-hydroxyureidyl)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-1-(N'-Allyl-N'-hydroxyureidyl)propyn-3--yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-tri methoxyphenyl)-tetrahydrofuran.

4- 5-1-(N'-Hydroxy-N'-hydroxyethylureidyl)propyn-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

Double bonded hydroxamates: Both cis and trans isomers at thetetrahydrofuran ring

4- 5-trans-1-(N-Acetyl-N-hydroxyamino)propen-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-tri methoxyphenyl)-tetrahydrofuran.

4- 5- trans-1-(N-Hydroxy-N-propanoylamino)propen-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5- trans-1-(N-Butyl-N-hydroxyamino)propen-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-tri methoxyphenyl)-tetrahydrofuran.

4- 5-trans-1-(N-hydroxy-N-nicotinoylamino)propen-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-trans-1(N-Hydroxy-N-phenylacetylamino)propen-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5 -trimethoxyphenyl)-tetrahydrofuran.

4- 5trans-1-(N-Hydroxy-N-3-phenoxybenzoylamino)propen-3-yl!-3-methoxy-4-propoxy phenyl! -2-(3,4,5 -trimethoxyphenyl)-tetrahydrofuran.

4- 5-trans-1-(N-3-Chlorobenzoyl-N-hydroxyamino)propen-3-yl!-3-methioxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5- trans-1-(N-3-Chlorobenzoyl-N-hydroxyamino)propen-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-trans-1-(N-2,4-Difluorobenzoyl-N-hydroxyamino)propen-3-yl!-3-methoxy-4-propoxypheny1!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5- trans-1-(N-Hydroxy-N-3,4-methylenedioxybenzoylamino)propen-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

and also the corresponding saturated hydroxamates, e.g., 4- 5-1-(-N-Hydroxy

N-3,4-methylenedioxybenzoyl-N-hydroxyamino)propyl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl) tetrahydrofuran.

Double bonded ureas: Both cis and trans isomer at the tetrahydrofuranring

4- 5-trans-1-(N'-Hydroxy-N'-methylureidyl)propen-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-trans-1-(N'-Ethyl-N'-hydroxyureidyl)propen-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-trans-1-(N'-Hydroxy-N'-propylureidyl)propen-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-trans-1-(N'-Butyl-N'-hydroxyureidyl)propen-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-trans-1-(N'-Hydroxy-N'-i-propylureidyl)propen-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-trans-1-(N'-t-Butyl-N'-hydroxyureidyl)propen-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-trans-1-(N'-Benzyl-N'-hydroxyureidyl)propen-3-yl!-N-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-trans-1-(N'-Allyl-N'-hydroxyureidyl)propen-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-trans-1-(N'-Cyclohexyl-N'-hydroxyureidyl)propen-3-yl!-3-methoxy-4-propoxyphenyl-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-trans-1-(N'-Hydroxy-N'-methylthioethylureidyl)propen-3-yl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

4- 5-trans-1-(N'-Cyclohexyl-N'-hydroxyureidyl)propen-3-yl!-3-methoxy-4-propoxy!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

and also the corresponding saturated ureas, e.g.,

4- 5-1(N'-Cyclohexyl-N'-hydroxyureidyl)propyl!-3-methoxy-4-propoxyphenyl!-2-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

Formula III

cis and trans Isomers of the following compounds:

2-(3-Methoxy-4-methoxyethoxy-5-N-methylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2-(3-Methoxy-4-methoxyethoxy-5-N-ethylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2-(3-Methoxy-4-methoxyethoxy-5-N,N-dipropylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2-(3-Methoxy-4-methylthioethoxy-5-N-methylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-(4-p-Hydroxyphenylthioethoxy-3-methoxy-5-N-methylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2- 3-Methoxy-4-methoxyethoxy-5-(1-pyrrolidinyl) phenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2-(3-Methoxy-4-methoxyethoxy-5-N,N-diethylaminophenyl)-5-(3,4,5-trinmethoxyphenyl)-tetrahydrothiophene.

2- 4-p-Cyanophenylthioethoxy-3-methoxy-5-(1-pyrrolidinyl)phenyl!-5-(3,4,5 -trimethoxyphenyl)-tetrahydrofuran.

2-(3-Methoxy-4-p-methoxyphenylthioethoxy-5-N,N-dimethylaminophenyl)-5-(3,4,5 -trimethoxyphenyl)-tetrahydrofuran.

2-(3-Methoxy-4-p-cyanophenylthioethoxy-5-N,N-diethylaminophenyl)-5-(3,4,5 -trimethoxyphenyl)-tetrahydrothiophene.

2-(4-p-Hydroxyphenylthioethoxy-3-methoxy-5-N-methylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2-(4-p-Cyanophenylthioethoxy-3-methoxy-5-N,N-dimethylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2- 3-Methoxy-4-p-methoxyphenylthioethoxy-5-(4-morpholinyl)phenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2-(3-Methoxy-4-p-methoxyphenylthioethoxy-5-N,N-dimethylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2-(4-p-Cyanophenylthioethoxy-3-methoxy-5-N-methylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-(4-p-Cyanophenylthioethoxy-3-methoxy-5-N-methylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2- 4-p-Cyanophenylthioethoxy-3-methoxy-5-(4-morpholinyl)phenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran.

2-(3-Methoxy-4-methoxyethoxy-5-N,N-dibutylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

2-(3-Methoxy-4-methylthioethoxy-5-N-methylaminophenyi)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene.

B. Stereochemistry

The 2,5-diaryl tetrahydrofurans, tetrahydrothiophenes, and pyrrolidines,1,3-cyclopentanes, and the 2,4-diaryl tetrahydrofurans,tetrahydrothiophenes, and pyrrolidines disclosed herein exhibit a numberof stereochemical configurations. Carbon atoms 2 and 5 (or 2 and 4, inthe compounds of Formula II) in the center ring are chiral, and thus thecenter ring exists at a minimum as a diastereomeric pair. Eachdiastereomer exists as a set of enantiomers. Therefore, based on thechiral C₂ and C₅ (or C₂ and C₄, in Formula II) atoms alone, the compoundis a mixture of four enantiomers.

If nonhydrogen substituents are located on carbon atoms 3 and 4 in thecenter ring, (or carbon atoms 3 and 5, in Formula II compounds) then theC₃ and C₄ atoms are also chiral, and can also exist as a diastereomericpair, that is again a mixture of four enantiomers.

The R groups in the active compounds described herein can likewiseinclude chiral carbons, and thus, optically active centers.

It is sometimes found that one or more enantiomers of a biologicallyactive compound is more active, and perhaps less toxic, than otherenantiomers of the same compound. Such enantiomerically enrichedcompounds are often preferred for pharmaceutical administration tohumans. For example, it has been discovered that trans-2,5-diaryltetrahydrothiophene and trans-2,5-diaryl tetrahydrofuran are often moreactive PAF receptor antagonists than their cis counterparts.

One of ordinary skill in the art can easily synthesize and separate theenantiomers of the disclosed compounds using chiral reagents and knownprocedures, and can evaluate the biological activity of the isolatedenantiomer using methods disclosed herein or otherwise known. Throughthe use of chiral NMR shift reagents, polarimetry, or chiral HPLC, theoptical enrichment of the compound can be determined.

Classical methods of resolution include a variety of physical andchemical techniques. Often the simplest and most efficient technique isrepeated recrystallization. Recrystallization can be performed at anystage in the preparation of the compound, or the final enantiomericproduct If successful, this simple approach represents a method ofchoice.

When recrystallization fails to provide material of acceptable opticalpurity, other methods can be evaluated. If the compound is basic, onecan use chiral acids that form diastereomeric derivative that maypossess significantly different solubility properties. Nonlimitingexamples of chiral acids include malic acid, mandelic acid, dibenzoyltartaric acid, 3-bromocamphor-8-sulfonic acid, 10-camphorsulfonic acid,and di-p-toluoyltartaric acid. Similarly, acylation of a free hydroxylgroup with a chiral acid also results in the formation of diastereomericderivatives whose physical properties may differ sufficiently to permitseparation.

Enantiomerically pure or enriched compounds can be obtained by passingthe racemic mixture through a chromatographic column that has beendesigned for chiral separations, including cyclodextrin bonded columnsmarketed by Rainin Corporation.

A variety of chemical reagents and experimental procedures have beendeveloped in recent years to produce enantiomerically pure or enrichedproducts. For example, individual 2S,5S or 2R,5R enantiomers of2,5-diaryl tetrahydrofurans can be prepared by the method described byCorey et al. (Corey, E. J. et al., Tetrahedron Letters 29, 2899 (1988)).

C. Syntheses of Active Compounds

The 2,5-diaryl tetrahydrofurans and tetrahydrothiophenes disclosedherein can be prepared in a variety of ways known to those skilled inthe art, including by methods disclosed in or obvious in view of methodsdisclosed in U.S. Pat. Nos. 4,539,332, 4,757,084, 4,996,203 and5,001,123, and European Patent Application Nos. 90306234.7, 90306235.4,and 89202593.3. Examples 1-14, and corresponding FIGS. 1-6, providedetailed descriptions of the preparation of a number of active2,5-diaryl tetrahydrofurans and tetrahydrothiophenes.

1,3-Diaryl cyclopentanes can be prepared as described in Example 15(FIG. 7) following the procedure of Graham, et al. (1.3-DiarylCyclopentanes: A New Class of Potent PAF Receptor Antagonists. 197th ACSNational Meeting, Dallas, Tex., Apr. 9-14, 1989, Division of MedicinalChemistry, poster no. 25 (abstract)), or by other known methods.

2,5-Diaryl pyrrolidines can be prepared as described in Example 16 (FIG.8), or by other methods known to those skilled in the art, includingthat described by Boekvall, et al. (J. Org. Chem. 55, 826 (1990)).

2,4Diaryl tetrahydrofurans and tetrahydrothiophenes can be prepared asdescribed in detail in Example 17 (FIG. 9), or by other methods known tothose skilled in the art. 2,4-Diaryl pyrrolidines can also be preparedby adaptations of methods described herein, or by other known methods.

A general procedure for preparing a hydroxyurea is: ##STR12## wherein Ris a 2,5-diaryl tetahydrothiophene, tetrahydrofuran, or pyrrolidine;1,3-diaryl cyclopentane; or 2,4-diaryl tetrahydrothiophene,tetrahydrofuran or pyrrolidine; with or without a linking moiety, and R'is a moiety as defined in detail above.

General procedures for preparing reverse hydroxyureas are: ##STR13##

A general procedure for preparing a hydroxamic acid is: ##STR14##

A general procedure for preparing a reverse hydroxamic acid is:##STR15##

A general procedure for preparing amidohydroxyurea moieties is:##STR16##

Oxaalkanes and thioalkanes can be prepared as described by Crawley, etal., J. Med Chem., 35, 2600-2609 (1992), and illustrated below, byconversion of the desired moiety into a Grignard reagent or lithiumsalt, followed by reaction with the appropriate cyclic ketone. ##STR17##

Quinolylmethoxy moieties can be prepared as described by Musser, et al.,J. Med. Chem., 35, 2501-2524 (1992), and references cited therein, asillustrated below. ##STR18##

EXAMPLE 1

Preparation oftrans-2-(3,4-dimethoxy-5-aminoethylthiophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene(1, FIG. 2) N,N-Dibenzyloxycarbonyl cystamine (compound 101, FIG. 1)

Cystamine dichloride (18 g, 79.93 mmole) was dissolved in 180 mL of 2NNaOH (14.4 g, 360 mmole). To this solution was added benzylchloroformate (29.72 g, 174.21 mmole) dropwise at 0° C. A precipitateformed, and the mixture was stirred for 2 hours at 0° C. The precipitatewas collected, washed with water and methanol and recrystallized fromCHCl₃ -CH₃ OH to obtain a white crystalline solid (30.1 g, 89.6%). ¹ HNMR (CDCl₃): 2.78 (t, 4H), 3.48 (q, 4H); 5.10 (s, 4H); 5.24 (bs, 2H);7.34 (s, 10H).

3,4-Dimethoxy-5-iodo-benzaldehyde (compound 102, FIG. 1)

A mixture of 5-iodovanillin (7 g, 25.18 mmole), potassium carbonate(8.78 g, 63.53 mmole) and iodomethane (6.43 g, 45.30 mmole) wassuspended in 60 mL of DMF and stirred at room temperature for 14 hours.The reaction mixture was quenched with water and extracted with diethylether. The organic layer was dried over MgSO₄, filtered and evaporatedin vacuo to obtain a solid which was recrystallized from hexane/ethylacetate (2:1) (6.28 g, 85.4%).

3,4-Dimethoxy-5-N-benzyloxycarbonylethylthiobenzaldehyde (compound 103,FIG. 1)

A suspension of 3,4-dimethoxy-5-iodo-benzaldehyde (6.18 g, 21.16 mmole)and copper (11.55 g, 181.74 mmole) in 50 mL of DMF was heated at 140° C.for 2 hours and N,N-dibenzyloxycarbonyl cystamine (14.19 g, 33.78 mmole)was added. The solution was heated at 140° C. for 40 hours, filtered andthe residue washed with ethyl acetate. The combined filtrate wasevaporated to leave a solid which was recrystallized from ethyl acetateand hexane (7.05 g, 88.5%).

3-(N,N-Dimethylamino)-1-(3,4,5-trimethoxyphenyl)-1-propanone (compound104, FIG. 1)

3,4,5-Trimethoxyacetophenone (50 g, 237.8 mmole), paraformaldehyde (9.75g, 304.7 mmole), dimethylamine hydrochloride (26.42 g, 324.0 mmole) and5 mL conc. HCl were dissolved in 200 mL absolute ethanol and refluxedfor 10 hours. Additional dimethylamine hydrochloride (13.21 g, 162.0mmole) and paraformaldehyde (9.75 g, 304.7 mmole) were added and thesolution returned to reflux. After 54 hours (total reaction time), 80 mLof 10% HCl and 500 mL of water were added and the solution was extractedwith ethyl ether. The acidic aqueous layer was adjusted to pH 10 with10% NaOH. The basic solution was extracted with ethyl acetate, driedover MgSO₄, filtered and evaporated in vacuo to provide 57.5 g of ayellow oil (92%). ¹ H NMR (CDCl₃): 2.30 (s, 6H); 2.74 (t, 2H); 3.11 (t,2H); 3.91 (s, 9H); 7.23 (s, 1H); 7.32 (s, 1H).

3-(N,N,N-Trimethylamino-1-(3,4,5-trimethoxyphenyl)-1-propanone iodide(compound 105, FIG. 1)

3-(N,N-Dimethylamino-1-(3,4,5-trimethoxyphenyl)-1-propanone (57 g, 213.5mmole) was dissolved in 200 mL of anhydrous diethyl ether. To thissolution was added methyl iodide (57.6 g, 405.7 mmole). A whiteprecipitate formed immediately, and the reaction stirred at roomtemperature for an additional 2 hours. The product was isolated bysuction filtration (83.8 g, 96%).

3,4,5-Trimethoxyphenylvinylketone (compound 106, FIG. 1)

3-(N,N,N-Trimethylamino-1-(3,4,5-trimethoxyphenyl)-1-propanone iodide(30 g, 73.3 mmole) and potassium carbonate (16.0 g, 115.9 mmole) weresuspended in acetone (500 mL). The solution was stirred overnight atroom temperature and then heated at reflux for 5 hours. The solution wasthen filtered, and evaporated to an oil which was purified by flashcolumn chromatography using 1:1 hexane/ethyl acetate as solvent (9.2 g,56.4%). ¹ H NMR (CDCl₃): 3.92 (s, 9H); 5.92 (d, 1H); 6.44 (d, 1H); 7.12(m, 1H); 7.22 (s, 2H).

1-(3,4-Dimethoxy-5-N-benzyloxycarbonylethylthiophenyl)-4-(3,4,5-trimethoxyphenyl)-1,4-butanedione (compound 107, FIG. 2)

Freshly prepared 3,4,5-trimethoxyphenylvinylketone (8.46 g, 38.11mmole), 3,4-dimethoxy-5-N-benzyloxycarbonylethylthiobenzaldehyde (7.05g, 18.8 mmole), 3-benzyl-5 -(2-hydroxyethyl)-4-methyl-thiazoliumchloride (2.0 g, 7.41 mmole) and 32 ml of trimethylamine were stirred at65° C. overnight. The reaction was quenched with water, acidified with10% HCl and extracted with chloroform. The organic layer was washed withsaturated aqueous sodium chloride, dried over MgSO₄, filtered andevaporated in vacuo to an oil that was purified by flash columnchromatography using 1:1 hexane/ethyl acetate as eluent (8.36 g, 76.7%).¹ H NMR (CDCl₃): 3.10 (t, 2H); 3.45 (m, 6H); 3.90 (s, 3H); 3.93 (s, 9H);3.94 (s, 3H); 5.08 (s, 2H); 5.30 (bt, 1H); 7.29 (s, 2H); 7.33 (s, 5H);7.46 (d, 1H); 7.72(d, 1H).

1-(3,4-Dimethoxyphenyl-5-N-benzyloxycarbonylethylthiophenyl)-4-(3,4,5-trimethoxyphenyl)-1,4-butanediol(compound 109, FIG. 2)

1-(3,4-Dimethoxy-5-N-benzyloxycarbonylethylthiophenyl)-4-(3,4,5-trimethoxyphenyl)-1,4-butanedione (2.26 g, 5.16 mmole) was dissolved in 23 mL of THF and thesolution was diluted with 36 mL of methanol. To this solution was addedsodium borohydride (264.9 mg, 9.29 mmole) in 10 mL of water dropwise,and the solution stirred at room temperature for 2.5 hours. The reactionmixture was then cooled, quenched with water, and extracted withchloroform. The organic layer was dried over MgSO₄, filtered andevaporated in vacuo to provide 2.21 g of diol (97.6%).

2-(3,4-Dimethoxy-5-N-benzyloxycarbonylethylthiophenyl)-5-(3,4,5-trimethoxyphenyl) tetrahydrothiophene(compound 111, FIG. 2)

1-(3,4-Dimethoxy-5-N-benzyloxycarbonylethylthiophenyl)-4-(3,4,5-trimethoxyphenyl)-1,4-butanediol(2.66 g, 4.547 mmole) and 2.6 g of P₄ S₁₀ were dissolved in 30 mLpyridine and heated at 90° C. for 16 hours. The solvent was removed bydistillation in vacuo and the residue was acidified with 10% HCl andextracted with dichloromethane. The organic layer was washed with 10%HCl, water and saturated aqueous sodium chloride, dried over MgSO₄,filtered and evaporated to give a gummy residue that was purified byflash column chromatography using 2:1 hexane/ethyl acetate as solventand then by HPLC using hexane and ethyl acetate as solvent.

trans-2-(3,4-Dimethoxy-5-N-aminoethylthiophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene (compound 1,FIG. 2)

Compound 1 is prepared from2-(3,4-dimethoxy-5-N-benzyloxycarbonylethylthiophenyl)-5-(3,4,5-trimethoxyphenyl)tetrahydrothiophene by treatment with KOH (5equivalents) in ethylene glycol at 100° C. for 24 hours. The mixture isquenched with water and extracted with an organic solvent. The organiclayer is dried, and evaporated to leave a solid that is purified bychromatography.

EXAMPLE 2

Preparation oftrans-2-(3,4-Dimethoxy-5-aminoethylsulfonylphenyl)-5-(3,4,5-trimethoxyphenyl)tetrahydrothiophene (compound 2, FIG. 2)

1-(3,4-Dimethoxy-5-N-benzyloxycarbonylethylsulfonylphenyl)-4-(3,4,5-trimethoxyphenyl)-1,4-butanedione(Compound 108, FIG. 3)

A solution of magnesium monoperoxyphthalic acid (MMPP, 5.98 g, 9.68mmole) in water (15 mL) was added to a solution of1-(3,4-dimethoxy-5-N-benzyloxycarbonylethylthiophenyl)-4-(3,4,5-trimethoxyphenyl)-1,4-butanedione (3 g, 5.16 mmole) in 40 mL ofacetonitrile at room temperature. The solution was stirred at roomtemperature for 2 hours, and then water added, and the mixture extractedwith dichloromethane. The organic layer was washed with 1N NaOH, waterand then saturated aqueous NaCl, filtered and evaporated in vacuo to asolid that was recrystallized in ethyl acetate and hexane to provide2.97 g of dione (93.7%).

1-(3,4Dimethoxy-5-N-benzyloxycarbonylethylsulfonylphenyl)-4-(3,4,5-trimethoxyphenyl)-1,4-butanediol(compound 110, FIG. 2)

1-(3,4-Dimethoxy-5-N-benzyloxycarbonylethylsulfonylphenyl)-1,4-butanedione(2.87 g, 4.68 mmole) was dissolved in 20 mL THF and the solution dilutedwith 32 mL methanol. To this solution was added sodium borohydride(318.8 mg, 8.43 mmole) in 9 mL water dropwise, and the solution stirredat room temperature for 2.5 hours. The solution was cooled and quenchedwith water, the aqueous layer extracted with dichloromethane and theorganic layer dried over MgSO₄, filtered and evaporated in vacuo toprovide 2.86 g of diol (99%).

trans-2-(3,4-Dimethoxy-5-N-benzyloxycarbonylethylsulfonylphenyl)-5-(3,4,5-trimethoxyphenyl)tetrahydrothiophene (compound 112, FIG. 2).

1-(3,4-Dimethoxy-5-N-benzyloxycarbonylethylsulfonylphenyl)-4-(3,4,5-trimethoxyphenyl)-1,4-butanediol(2.8 g, 4.54 mmole) was dissolved in 25 mL pyridine and treated with2.82 g of P₄ S₁₀ and then heated at 90° C. for 16 hours. The solvent wasremoved by distillation in vacuo, and the residue was acidified. with10% HCl and extracted with dichloromethane. The organic layer was washedwith 10% HCl, water, and saturated sodium chloride solution, dried overMgSO₄, filtered and then evaporated to give a gummy residue that waspurified by flash column chromatography with 1:1 hexane: ethyl acetate,followed by HPLC using hexane and ethyl acetate as solvent (yield 34mg). ¹ H NMR (CDCl₃): 2.09 (m, 2H); 2.60 (m, 2H); 3.60 (m, 4H); 3.82 (s,3H); 3.90 (s, 6H); 3.92 (s, 3H); 3.96 (s, 3H) ; 4.81 (m, 2H); 5.09 (s,2H); 5.49 (bs, 1H); 6.70 (s, 2H); 7.34 (d, 1H); 7.35 (s, 5H); 7.56 (d,1H).

trans-2-(3,4-Dimethoxy-5-aminoethylsulfonylphenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene (compound2, FIG. 2)

trans-2-(3,4-Dimethoxy-5-N-benzyloxycarbonylethylsulfonyl-phenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene (32.6 mg, 0.052 mmole) wasdissolved in 3 mL ethanol. To this solution was added 1.2 mL cyclohexeneand 46.9 mg 10% Pd-C catalyst. The mixture was refluxed for 2 hours, andthen the catalyst removed by filtration. The catalyst was washed withethanol, and the combined filtrate evaporated under reduced pressure toan oil that was purified by flash column chromatography usinghexane/ethyl acetate (1:1) followed by chloroform/acetone (4:1) toprovide 4.1 mg product. ¹ H NMR (CDCl₃): 2.09 (m, 2H); 2.60 (m, 2H);2.68 (t, 2H); 3.10 (bs, 2H); 3.45 (t, 2H); 3.82 (s, 3H); 3.89 (s, 6H);3.93 (s, 3H); 3.97 (s, 3H); 4.81 (m, 2H); 6.70 (s, 2H); 7.30 (s, 1H);7.50 (s, 1H).

EXAMPLE 3

Preparation oftrans-2-(3-Methoxy-4-propoxy-5-N-benzylaminophenyl)-5-(3,4,5-tri-methoxyphenyl)-tetrahydrofuran (compound 3, FIG. 4)

3-Methoxy-4-propoxy-5-nitrobenzaldehyde (compound 114, FIG. 3)

A mixture of sodium hydride (6.09 g, 152.3 mmole) in 20 mL of drydimethylformamide (DMF) was cooled to 0° C. and then 5-nitrovanillin (25g, 126.8 mmole) in 41 mL of DMF was added dropwise. After 30 minutes,propyl iodide (25.87 g, 152.0 mmole) was added dropwise at 0° C. Whenthe addition was completed, the reaction was maintained at roomtemperature for 2 hours and then stirred overnight at 70° C. Water wasadded, and-the solution extracted with ethyl ether, washed with 10%NaOH, dried over MgSO₄, filtered and then evaporated in vacuo to an oil(19 g, 62.7%).

1-(3-Methoxy-4-propoxy-5-nitrophenyl)-4-(3,4,5-trimethoxyphenyl)-1,4-butanedione(compound 116, FIG. 3)

A solution of 3,4,5-trimethoxyphenylvinylketone (13.25 g, 59.64 mmol),3-methoxy-4-propoxy-5-nitrobenzaldehyde (11.95, 50 mmol),3-benzyl-5-(2-hydroxyethyl)-4-methylthiazolium chloride (5.36 g, 19.91mmol) and triethylamine (50 mL) were stirred at 60° C. overnight, andthen quenched with water, acidified with 10% HCl and extracted withchloroform. The organic layer was washed with saturated aqueous sodiumchloride, dried over magnesium sulfate, filtered and evaporated in vacuoto an yellow oil that was purified by flash column chromatography using2:1 hexane/ethyl acetate as the solvent to yield a white solid (9.59 g,41.6%). ¹ H NMR (CDCl₃): 1.07 (t, 3H), 1.86 (m, 2H), 3.40 (d, 4 H); 3.88(s, 3H), 3.92 (s, 9H), 4.04 (t, 2H), 7.54 (d, 1H), 8.07 (d, 1H).

1-(3-Methoxy-4-propoxy-5-nitrophenyl)-4-(3,4,5-trimethoxyphenyl)-1,4-butanediol (compound 118, FIG. 3)

To a solution of 1-(3-methoxy-4-propoxy-5-nitrophenyl)-4-(3,4,5-trimethoxyphenyl)-butane-1,4-dione (11.53 g, 25 mmol) in 350 mL ofmethanol and 250 mL of tetrahydrofuran was added dropwise a solution ofsodium borohydride (3.076 g, 81.34 mmol) in 140 mL of water. After theaddition was completed, the mixture was stirred at room temperature for3 hours, quenched with water and extracted with dichloromethane. Theorganic layer was dried over magnesium sulfate, filtered and evaporatedto provide a foam (11.53 g, 99.24%). ¹ H NMR (CDCl₃): 1.05 (t, 3H),1.80-1.95 (m, 6H), 3.80-3.98 (m, 12H), 4.1 (t, 2H), 4.72. (m, 2H), 6.6(s, 2H), 7.15 (s, 1H), 7.35 (s, 1H).

2-(3-Methoxy-4-propoxy-5-nitrophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(compound119, FIG. 3)

A suspension of P₄ S₁₀ (19.25 g, 43.3 mmol) in 250 mL of pyridine washeated at 120° C. for 75 minutes. To this suspension was then added asolution of 1-(3-methoxy-4-propoxy-5-nitrophenyl)-4-(3,4,5-trimethoxyphenyl)-butane-1,4-diol (4.65 g, 10 mmol) in 50 mLof pyridine. The temperature was reduced to 90° C. and stirringcontinued for an additional 90 minutes. After cooling, ice and waterwere added, the mixture was extracted with methylene chloride. Theorganic layer was washed with water, 5% HCl, water, sodium bicarbonateand saturated aqueous sodium chloride, and then dried over magnesiumsulfate, filtered and evaporated.

The mixture of cis and trans compounds were separated by HPLC usingWater's prep Nova-Pak HR silica cartridge (9:1 hexane: ethyl acetate) toprovide 300 mg (6.5%) trans and 250 mg (5.42%) of cis isomer. Transisomer. ¹ H NMR (CDCl₃): 1.05 (t, 3H), 1.80-1.90 (m, 2H), 2.10-2.20 (m,2H), 2.60-2.70 (m, 2H), 3.85-3.95 (m, 12H), 4.10 (t, 2H), 4.85 (m, 2H),6.75 (s, 2H), 7.20 (d, 1H), 7.45 (d, 1H). Cis isomer. ¹ H NMR (CDCl₃):1.05 (t, 3H), 1.80-1.90 (m, 2H), 2.10-2.20 (m, 2H), 2.60-2.70 (m, 2H),3.85-3.95 (m, 12H), 4.10 (t, 2H), 4.70 (m, 2H), 6.75 (s, 2H), 7.20 (d,1H), 7.45 (d, 1H).

trans-2-(3-Methoxy-4propoxy-5-aminophenyl)-5-(3,4,5-trimethoxyphenyl)tetrahydrofuran (compound 122, FIG. 3)

trans-2-(3-Methoxy-4-propoxy-5-nitrophenyl)-5-(3,4,5trimethoxyphenyl)-tetrahydrofuran (2.235 g, 5 mmol) was dissolved in 45mL of absolute ethanol. To this solution was added calcium chloride (0.5g, 5 mmol) in 10 mL of water followed by freshly activated zinc dust(7.5 g). The mixture was refluxed for 12 hours, and the solid thenremoved by vacuum filtration through Celite. The filtrate was washedwith water, dried over magnesium sulfate, and evaporated in vacuo to awhite foam (2.085 g, 97.28%).

trans isomer. ¹ H NMR: (CDCl₃): 1.10 (t, 3H), 1.80-1.90 (m, 2H),2.00-2.15 (m, 2H), 2.50-2.60 (m, 2H), 3.80-3.97 (m, 12H), 4.10 (t, 2H),5.20-5.35 (m, 2H), 6.45 (s, 1H), 6.55 (s, 1H), 6.75 (s, 2H).

The cis product can be obtained in the same manner as described aboveusingcis-3-(3,4,5-trimethoxyphenyl)-2-(3-methoxy-4-propoxy-5-nitrophenyl)-tetrahydrofuranas the starting material.

Cis isomer. ¹ H NMR: (CDCl₃): 1.10 (t, 3H), 1.80-1.90 (m, 2H), 2.00-2.15(m, 2H), 2.50-2.60 (m, 2H), 3.80-3.97 (m, 12H), 4.10 (t, 2H), 5.10-5.20(m, 2H), 6.45 (s, 1H), 6.55 (s, 1H), 6.75 (s, 2H).

trans-2-(3-Methoxy-4propoxy-5-benzylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(compound 3, FIG. 4)

trans-2-(3-Methoxy-4-propoxy-5-nitrophenyl)-5-(3,4,5-trimethoxyphenyl)-tetahydrofuran (50 mg, 0.12 mmole) and potassiumcarbonate (1.0 g) were suspended in 2 mL of DMF. Benzyl bromide (205.1mg, 1.2 mmole) was added and the suspension was stirred at roomtemperature for 20 hours. The reaction was quenched with water andextracted with dichloromethane. The organic layer was dried over MgSO₄,filtered and evaporated in vacuo to an oil that was purified by columnchromatography with hexane/ethyl acetate solvent (yield 50.2 mg, 82.6%).¹ H NMR (CDCl₃): 1.05 (t, 3H); 1.83 (m, 4H); 2.32 (m, 2H); 3.85 (s, 3H);3.90 (s, 6H ); 3.91 (s, 3H); 4.05 (t, 2H); 4.28 (d, 2H); 4.67 (bs, 1H);5.08 (m, 2H); 6.42 (s, 1H); 6.57 (s, 2H); 6.65 (s, 1H); 7.20 (m, 5H).

EXAMPLE 4

Preparation oftrans-2-(3-Methoxy-4-propoxy-5-hydroxyethylaminophenyl)-5(3,4,5-trimethoxyphenyl)-tetrahydrofuran (compound 4, FIG. 4)

A mixture oftrans-2-(3-methoxy-4-propoxy-5-aminophenyl)-5-(3,4,5-trimethoxyphenyl)tetrahydrofuran (20 mg. 0.048 mmol), potassium carbonate (0.4 g), and2-iodoethanol (82.47 mg, 0.48 mmol) was suspended in 2 mL of DMF. Thereaction mixture was stirred at room temperature for 20 hours, quenchedwith water and extracted with dichloromethane. The organic layer wasdried over magnesium sulfate, filtered and evaporated in vacuo to an oilwhich was purified by column using 3:1 hexane/ethyl acetate as solvent(12.8 mg, 57.9%). ¹ H NMR (CDCl₃): 1.02 (t, 3H), 1.79 (m, 2H), 1.99 (m,2H), 2.43 (m, 2H), 3.33 (m, 2H ), 3.81 (m, 2H), 3.82 (s, 3H), 3.83 (s,3H), 3.88 (s, 6H), 3.90 (t, 2H), 5.18 (m, 2H), 6.40 (d, 2H), 6.61 (s,2H).

EXAMPLE 5

Preparation oftrans-2-(3-Methoxy-4-propoxy-5-N,N-diallylphenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran (compound 5, FIG. 4)

A mixture oftrans-2-(3-methoxy-4-propoxy-5-aminophenyl-5-(3,4,5-trimethoxyphenyl)tetahydrofuran (20 mg, 0.048 mmol), potassium carbonate (0.4 g), and2-allyliodide (80.56 mg, 0.48 mmol) was suspended in 2 mL of DMF. Thereaction mixture was stirred at room temperature for 20 hours, and thenquenched with water and extracted with dichloromethane. The organiclayer was dried over magnesium sulfate, filtered and evaporated in vacuoto an oil which was purified by column using 4:1 hexane/ethyl acetate assolvent (5.1 mg, 21.4%). ¹ H NMR (CDCl₃): 1.02 (t, 3H),1.79 (m, 2H),1.99 (m, 2H), 2.43 (m, 2H), 3.81 (m, 2H) , 3.85 (s, 3H), 3.87 (s, 6H),3.89 (s, 3H), 3.90 (m, 2H), 5.10-5.20 (m, 6H), 5.80 (m, 2H), 6.57 (s,1H), 6.63 (s, 2H), 6.63 (s, 1H).

EXAMPLE 6

Preparation oftrans-2-(3,4-Dimethoxy-5-N-benzylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene(compound 6, FIG. 4)

3,4-Dimethoxy-5-nitrobenzaldehyde (compound 113, FIG. 3)

A suspension of sodium hydride (4.87 g, 121.7 mmole) in 18 mL dry DMFwas cooled to 0° C. and then 5-nitrovanillin (20 g, 101.4 mmole) in 30mL of DMF was added dropwise. After 30 minutes, methyl iodide (43.18 g,304.2 mmole) was added dropwise at 0° C. When the addition wascompleted, the mixture was warmed to room temperature and stirredovernight. Water was added and the solution extracted with ethyl ether,the organic layer was washed with 10% NaOH solution, dried over MgSO4,filtered and evaporated in vacuo to an oil (8.7 g, 40.7%).

1-(3,4-Dimethoxy-5-nitrophenyl)-4-(3,4,5-trimethoxyphenyl)-1,4-butanedione(compound 115, FIG. 3)

A mixture of freshly prepared 3,4,5-trimethoxy-phenylvinylketone (7.12g, 32.08 mmole), 3,4-dimethoxy-5-nitrobenzaldehyde (5.64 g, 26.73mmole), 3-benzyl-5-(2-hydroxyethyl)-4 -methylthiazolium chloride (2.79g, 10.69 mmole) and triethylamine (28 mL) were stirred at 65° C.overnight. The reaction was quenched with water, acidified with 10% HCland extracted with dichloromethane. The organic layer was washed withsaturated aqueous sodium chloride, dried over MgSO₄, filtered andevaporated to an oil which was purified by flash column chromatographyusing 1:1 hexane and ethyl acetate as eluent (4.71 g, 40.7%).

1-(3,4-Dimethoxy-5-nitrophenyl)-4-(3,4,5-trimethoxyphenyl)-1,4-butanediol (compound 117, FIG. 3)

1-(3,4-Dimethoxy-5-nitrophenyl)-4-(3,4,5-trimethoxyphenyl)-1,4-butanedione(4.65 g, 10.74 mmole) was dissolved in 40 mL THF and the solution wasdiluted with 75 mL of methanol. To this solution sodium borohydride(0.73 g, 19.33 mmole) in 20 mL of water was added dropwise. The solutionwas stirred at room temperature for 2.5 hours, and the reaction mixturecooled, quenched with water, and the aqueous layer extracted withdichloromethane. The organic layer was dried over MgSO₄, filtered andevaporated in vacuo to provide 4.61 g of product (98.3%).

2-(3,4-Dimethoxy-5-nitrophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene(compound 120, FIG. 3)

1-(3,4-Dimethoxy-5-nitrophenyl)-4-(3,4,5-trimethoxyphenyl)-1,4-butanediol(4.61 g, 10.55 mmole) and 6.57 g of P₄ S₁₀ were suspended in 60 mL ofpyridine and heated at 90° C. for 16 hours. The solvent was removed bydistillation in vacuo. The residue was acidified with 10% HCl andextracted with dichloromethane. The organic layer was washed with 10%HCl, water and saturated aqueous sodium chloride, dried over MgSO₄,filtered and evaporated to give a gummy residue that was purified byflash column chromatography using 3:1 hexane/ethyl acetate as thesolvent (335.6 mg, 7.3%). ¹ H NMR (CDCL₃): 2.08 (m, 2H); 2.60 (m, 2H);3.82 (s, 3H); 3.90 (s, 6H); 3.95 (s, 3H); 3.98 (s, 6H); 4.81 (m, 2H);6.70 (s, 2H); 7.22 (d, 1H); 7.44 (d, 1H).

trans-2-(3,4-Dimethoxy-5-aminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene(compound 123, FIG. 3)

trans-2-(3,4-Dimethoxy-5-nitrophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene(0.3 g, 0.69 mmole) was suspended in 10 ml of ethanol. To this was addedCaCl₂ (72.63 mg, 0.65 mmole) in 2 mL water, followed by zinc metal (1.01g). The suspension was refluxed for 5 hours, filtered, and the residuewas washed with ethanol. The combined filtrate was washed with 10%NaHCO₃, water and saturated aqueous sodium chloride, dried over MgSO₄and evaporated in vacuo to an oil that was purified by flash columnchromatography using 1:1 hexane/ethyl acetate as solvent (30 mg, 10.8%).¹ H NMR (CDCl₃): 2.10 (m, 2H); 2.57 (m, 2H); 3.81 (s, 3H); 3.83 (s, 3H);3.87 (s, 3H); 3.89 (s, 6H); 4.80 (m, 2H); 6.45 (d, 1H); 6.51 (d, 1H);6.70 (s, 2H).

trans-2-(3,4-Dimethoxy-5-benzylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene(compound 6, FIG. 4)

trans-2-(3,4-Dimethoxy-5-aminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(10 mg, 0.025 mmole) and potassium carbonate (0.2g) were suspended in 1mL of DMF. To this solution was added benzyl bromide (42.23 mg, 0.25mmole). The mixture was stirred at room temperature for 20 hours,quenched with water and then extracted with dichloromethane. The organiclayer was dried over MgSO4, filtered and evaporated in vacuo to an oilthat was purified by column chromatography using hexane/ethyl acetate(3:1).

EXAMPLE 7

Preparationoftrans-2-(3-Methoxy-4-propoxy-5-benzylaminophenyl)-5-(3,4,5-trimethoxyphenyl)tetrahydrothiophene (Compound 7, FIG. 4)

3-Methoxy-4-propoxy-5-nitrobenzaldehyde (compound 1414, FIG. 4),1-(3-methoxy-4-propoxy-5-nitrophenyl)-4- (3,4,5-trimethoxyphenyl)-1,4-butanedione (compound 116, FIG. 4), and1-(3-methoxy-4-propoxy-5-nitrophenyl)-4-(3,4,5-trimethoxyphenyl)- 1,4-butanediol (compound 118, FIG. 4) were prepared as described in Example3.

2-(3-Methoxy-4-propoxy-5-nitrophenyl)-5-(3,4,5-trnethoxyphenyl)-tetrahydrothiophene(compound 121, FIG. 3)

Compound 121 was prepared in the same way as compound 120 (Example 6),using compound 118 as the starting material.

trans-2-(3-Methoxy-4-propoxy-5-aminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene(compound 124, FIG. 3)

Compound 124 was prepared in the same way as compound 123 (Example 6),using compound 121 as the starting material.

trans-2-(3-Methoxy-4propoxy-5-benzylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene(Compound 7, FIG. 4)

trans-2-(3-Methoxy-4-propoxy-5-aminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene(10 mg, 0.023 mmole) and potassium carbonate (0.2 g) were suspended in 1mL DMF. To this mixture was added benzyl bromide (39.50 mg, 0.23 mmole).The mixture was stirred at room temperature for 20 hours, quenched withwater, and then extracted with dichloromethane. The organic layer wasdried over MgSO₄, filtered and evaporated in vacuo to an oil that waspurified by column chromatography using hexane/ethyl acetate (3:1) assolvent.

EXAMPLE 8

trans-2-(3,4-Dimethoxy-5-N,N-dihydroxyethylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene (compound 8, FIG. 4)

Compound 8 was prepared by the method described above for compound 4,using compound 123 as the starting material.

EXAMPLE 9

trans-2-(3-Methoxy-4-propoxy-5-N-hydroxyethylaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene (Compound 9, FIG. 4)

Compound 9 was prepared in the same manner as compound 4, describedabove, using compound 122 as the starting material.

EXAMPLE 10

trans-2-(3,4-Dimethoxy-5-N,N-diallylaminophenyl)-5-(3,4,5-tri-methoxyphenyl)-tetrahydrothiophene(Compound 10, FIG. 5)

Compound 10 was prepared by the method described above for compound 5,using compound 123 as the starting material.

EXAMPLE 11

trans-2-(3-Methoxy-4-propoxy-5-N,N-diallyfaminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene(Compound 11, FIG. 4)

Compound 11 was prepared in the same manner as compound 5, usingcompound 124 as the starting material.

EXAMPLE 12

cis- and trans-2- N'-hydroxyl-N'-(substituted)!-N-2-propoxy-3-methoxy-5-{5-(3,4,5 -trimethoxyphenyl)-(tetrahydrofuran ortetrahydrothiophene)}-phenyl!-urea (compounds 12-32 and 38-41, FIG. 4)

3-Methoxy-4-propoxy-5-nitrobenzaldehyde (compound 114, FIG. 3)

A mixture of 5-nitrovanillin (19.72 g, 100 mmol), potassium carbonate(35 g, 253.23 mmol) and propyl iodide (32.86 mL, 335.83 mmol) in 160 mLof N,N-dimethylformamide was stirred at 60° C. for 12 hours. The mixturewas then cooled, quenched with water and extracted with methylenechloride. The organic layer was washed several times with water, driedover magnesium sulfate, filtered and evaporated in vacuo to an oil whichwas purified by flash chromatography on silica gel (230-400 mesh) using2:1 hexane/ethyl acetate as eluent, to provide3-methoxy-4-propoxy-5-nitrobenzaldehyde (13.54 g, 57%). ¹ H NMR (CDCl₃):1.00 (t, 3H), 1.85 (m, 2H), 4.00 (s, 3H), 4.25 (t, 2H), 7.65 (s, 1H),7.85 (s, 1H), 9.95 (s, 1H).

Compounds 122 and 124 are prepared as described above.

cis and trans 2- N'-Hydroxyl!-N-2-propoxy-methoxy-5-{5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran}-phenyl!urea (compound 12, FIG. 4)

trans-2-(3-Methoxy-4-propoxy-5-aminophenyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(41.7 mg, 0.1 mmol), triethylamine (20 mL), and triphosgene (10 mg,0.034 mmol) in 5 mL of dry dichloromethane were refluxed for 2 hoursunder an argon atmosphere. The reaction was monitored with thin layerchromatography. On indication that the amine had been converted toisocyanate, the reaction was cooled to room temperature andhydroxylamine hydrochloride (10.5 mg, 0.15 mmol) in 0.5 mL of THF, 29 mLof triethylamine, and 0.1 mL of water added. The solution was stirred atroom temperature overnight under an argon atmosphere. The solvent wasthen removed in vacuo, and the resulting oil dissolved indichloromethane. The organic layer was washed with water, dried overmagnesium sulfate, filtered and concentrated to an oil in vacuo. The oilwas purified by flash chromatography on silica gel with 1:1.5hexane/ethyl acetate as eluent (38 mg, 79.83%). ¹ H NMR (CDCl₃): 1.00(t, 3H), 1.75 (m, 2H), 2.00 (m, 2H), 2.50 (m, 2H), 3.80-4.00 (m, 14H),5.20 (m, 2 H), 6.60 (s, 2H), 6.75 (s, 1H), 7.40 (s, 1H), 7.85 (br, 1H),8.50 (s, 1H).

cis and trans 2-(3-Methoxy-4-propoxy-5-nitrophenyl)-5-(3,4,5trimethoxyphenyl)tetrahydrothiophene (Compound 119, FIG. 3)

Compound 119 was prepared as described in Example 3.

The nitro group in compound 119 can be reduced to provide thecorresponding amine (compound 122, FIG. 3) in a manner similar to thatdescribed above for the reduction of the nitro group in compound 121 toprovide compound 124.

A wide variety of hydroxy urea derivatives of 2,5-diaryltetrahydrofurans and tetrahydrothiophenes can be obtained using thegeneral procedure set out above for the preparation of compound 12, byreaction of the appropriately substituted hydroxy amine with a2,5-diaryl tetrahydrofuran or tetrahydrothiophene that has anappropriately placed amine function. The following compounds wereobtained using this general method.

trans- 2-5-(N'-Methyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(compound 13, FIG. 4)

¹ H NMR (CDCl₃): 1.00 (t, 3H),1.75 (m, 2H), 2.00 (m, 2H), 2.50 (m, 2H),3.2 (s, 3H), 3.80-4.00 (m, 14H), 5.20 (m, 2H), 6.60 (s, 2H), 6.75 (s,1H), 7.40 (s, 1H), 7.85 (s,1 H).

trans- 2-5-(N'-Isopropyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran (compound 14, FIG. 4)

¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.2 (d, 6H), 1.75 (m, 2H), 2.00 (m, 2H),2.50 (m, 2H), 3.80-4.00 (m, 14H), 4.6 (m, 1H), 5.20 (m,2H), 6.60 (s,2H), 6.75 (s, 1H) 6.77 (s, 1H), 7.90 (s, 1H), 8.50 (s, 1H).

trans -2- 5-(N'-t-Butyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trinmethoxyphenyl) tetrahydrofuran (compound 15, FIG. 4).

¹ H NMR (CDCl₃):1.00 (t, 3H), 1.4 (s, 9H), 1.75 (m, 2H), 2.00 (m, 2H),2.50 (m, 2H), 3.80-4.00 (m, 14H), 5.20 (m, 2H), 6.60 (s, 2H), 6.75 (s,1H), 6.77 (s, 1H), 7.90 (s, 1H), 8.50 (s, 1H).

trans -2-5-(N'-Cyclohexyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(compound 16, FIG. 4).

¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.30 (m, 2H), 1.6 (m, 4H), 1.75 (m, 5H),2.00 (m, 3H), 2.50 (m, 2H), 3.80-4.00 (m, 14H), 5.20 (m, 2H), 6.60 (s,2H), 6.75 (s, 1H), 6.77 (s, 1H), 7.85 (s, 1H), 8.50 (s, 1H).

trans -2-5-(N'-Benzyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(compound 17, FIG. 4)

¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.75 (m, 2H), 2.00 (m, 2H), 2.50 (m, 2H),3.80-4.00 (m, 14H), 4.7 (s, 2H), 5.20 (m, 2H), 6.60 (s, 2H), 6.75 (s,1H), 7.2-7.5 (m, 6H), 7.90 (s, 1H), 8.50 (s, 1H).

cis -2- 5-(N'-Hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl) tetrahydrofuran (compound 18, FIG. 4)

¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.75 (m, 2H), 2.00 (m, 2H), 2.50 (m, 2H),3.80-4.00 (m, 14H), 5.00 (m, 2H), 6.60 (s, 2H), 6.70 (s, 1H), 7.40 (s,1H), 7.85 (s, H), 8.50 (s, 1

cis -2-5-(N'-Hydroxy-N'-methylureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(compound 19, FIG. 4)

¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.75 (m, 2H), 2.00 (m, 2H), 2.50 (m, 2H),3.2 (s, 3H), 3.80-4.00 (m, 14H), 5.00 (m, 2H), 6.60 (s, 2H), 6.70 (s,1H), 7.70 (s, 1H), 7.85 (br, H), 8.50 (s, 1H).

cis -2-5-(N'-Hydroxy-N'-i-propylureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(compound 20, FIG. 4) ¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.2 (d, 6H), 1.75(m, 2H), 2.00 (m, 2H), 2.50 (m, 2H), 3.80-4.00 (m, 14H), 4.6 (m, 1H),5.00 (m, 2H), 6.60 (s, 2H), 6.75 (s, 1H), 6.77 (s, 1H), 7.90 (s, 1H),8.50 (s, 1H).

cis -2-5-(N'-tert-Butyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(compound 21, FIG. 4)

¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.4 (s, 9H), 1.75 (m, 2H), 2.00 (m, 2H),2.50 (m, 2H), 3.80-4.00 (m, 14H), 5.00 (m ,2H), 6.60 (s, 2H), 6.75 (s,1H), 6.77 (s, 1H), 7.90 (s, 1H), 8.50 (s, 1H).

cis -2-5-(N'-Cyclohexyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(compound 22, FIG. 4)

¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.30 (m, 2H), 1.6 (m, 4H), 1.75 (m, 5H),2.00 (2H), 3.80-4.00 (m, 14H), 5.00 (m, 2H), 6.60 (s, 2H), 6.75 (s, 1H),6.77 (s, 1H), 7.85 (s, 1H), 8.50 (s, 1H).

cis -2- 5-(N'-Benzyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5 -trinethoxyphenyl)-tetrahydrofuran (compound 23, FIG. 4)

¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.75 (m, 2H), 2.00 (m, 2H), 2.50 (m, 2H),3.80-4.00 (m, 14H), 4.7 (s, 2H), 5.0 (m, 2H), 6.60 (s, 2H), 6.70 (s,1H), 7.2-7.5 (m, 6H), 8.00 (s, 1H), 8.50 (s, 1H).

trans -2- 5-(N'-Hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl) tetrahydrothiophene (compound 24, FIG. 4)

¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.80 (m, 2H), 2.12 (m, 2H), 2.60 (m, 2H),3.80-4.00 (m, 12H), 4.01 t, 2H), 4.75 (m, 2H), 6.60 (s, 2H), 6.70 (s,1H), 7.4 (s, H), 8.50 (s, 1H).

trans -2- 5-(N'-Hydroxy-N'-methylureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl) tetrahydrothiophene (compound 25, FIG. 4)

¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.75 (m,2H), 2.00 (m,2H), 2.50 (m, 2H),3.20 (s, 3H), 3.80-4.00 (m,12H), 4.1 (t, 2H), 4.80 (m,2H), 6.60 (s, 2H),6.70 (s, 1H), 7.70 (s, 1H), 7.85 (s, 1H), 8.50 (s, 1H).

trans -2-5-(N'-Hydroxy-N'-i-propylylureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)tetrahydrothiophene (compound 26, FIG. 4)

1H NMR (CDCl₃): 1.00 (t, 3H), 1.2 (d, 6H), 1.75 (m, 2H), 2.00 (m, 2H),2.50 (m, 2H), 3.80-4.00 (m, 12H), 4.1 (t, 2H), 4.60 (m, 1H), 4.8 (m,2H), 6.60 (s, 2H), 6.75 (s, 1H), 6.77 (s, 1H), 7.90 (s, 1H), 8.50 (s,1H).

trans-2-(N'-hydroxyl-N'-tert-butyl-N-(2-propoxy-3-methoxy-5-(3,4,5-trimethoxyphenyl)tetrahydrothiophene) phenyl urea (compound 27, table 2)

¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.4 (s, 9H), 1.75 (m, 2H), 2.00 (m, 2H),2.50 (m, 2H), 3.80-4.00 (m,12H), 4.1 (t, 2H), 4.8 (m, 2H), 6.60 (s, 2H),6.75 (s, 1H), 7.40 (s, 1H), 7.85 (s, H), 8.50 (s, 1H).

cis -2- 5-(N'-Hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl) tetrahydrothiophene (compound 28, FIG. 4)

¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.75 (m, 2H), 2.00 (m, 2H), 2.50 (m, 2H),3.20 (s, 3H),3.80 -4.00 (m, 12H), 4.1 (t, 2H), 4.65 (m, 2H), 6.60 (s,2H), 6.70 (s, 1H), 7.70 (s, 1H), 7.85 (s, 1H), 8.50 (s, 1H).

cis -2- 5-(N'-Hydroxy-N'-methylureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl) tetrahydrothiophene (compound 29, FIG. 4)

¹ H NMR (CDCl₃): 1.00 (t, 3H),1.75 (m, 2H), 2.00 (m, 2H), 2.50 (m, 2H),3.20 (s, 3H), 3.80-4.00 (m, 12H), 4.1 (t, 2H), 4.65 (m, 2H), 6.60 (s,2H), 6.70 (s, 1H), 7.70 (s, 1H), 7.85 (s, 1H), 8.50 (s, 1H).

Cis- 2-5-(N'-Hydroxy-N'-isopropylureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene(compound 30, table 2)

¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.2 (d, 6H), 1.75 (m, 2H), 2.00 (m, 2H),2.50 (m, 2H), 3.80-4.00 (m, 14H), 4.60 (m, 1H), 4.65 (m, 2H), 6.60 (s,2H), 6.70 (s, 1H), 7.40 (s, 1H), 7.85 (s, H), 8.50 (s, 1H).

Cis- 2-5-(N'-t-Butyl-N'-isopropylureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene(compound 31, table 2)

¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.4 (s, 9H), 1.75 (m,2H), 2.00 (m,2H),2.50 (m, 2H), 3.80-4.00 (m,12H), 4.1 (t, 2H), 4.65 (m, 2H), 6.60 (s,2H), 6.75 (s, 1H), 7.40 (s, 1H), 7.85 (s, H), 8.50 (s, 1H).

Cis- 2-5-(N'-Cyclohexyl-N'-isopropylureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene(compound 32, table 2)

¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.30 (m, 2H), 1.6 (m, 4H), 1.75 (m, 5H),2.00 (m, 2H), 2.50 (m, 2H), 3.80-4.00 (m, 14H), 4.6 (m, 2H), 6.60 (s,2H), 6.75 (s, 1H), 6.77 (s, 1), 7.90 (s, 1H), 8.50 (s, 1H).

trans- 2-5-(N'-Ethyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(compound 38, table 2)

¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.2 (t, 3H), 1.75 (m, 2H), 2.00 (m, 2H),2.50 (m, 2H), 3.75 (q, 2H), 3.80-4.00 (m,14H), 5.20 (m, 2H), 6.60 (s,2H), 6.75 (s, 1H), 6.77 (s, 1H), 8.50 (s, 1H).

trans- 2-5-(N'-n-Butyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trinethoxyphenyl)-tetrahydrofuran(compound 39, table 2)

¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.2 (t, 3H), 1.5 (m, 2H), 1.75 (m, 2H),1.8 (m, 2H), 2.00 (m, 2H), 2.50 (m, 2H), 3.70 (t, 2H), 3.80-4.00(m,14H), 5.20 (m,2H), 6.60 (s, 2H), 6.75 (s, 1H), 6.77 (s, 1H), 7.90 (s,1H), 8.50 (s, 1H).

cis- 2-5-(N'-Ethyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)tetrahydrofuran (compound 40, table 2)

¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.2 (t, 3H), 1.75 (m, 2H), 2.00 (m, 2H),2.50 (m, 2H), 3.75 (q, 2H), 3.80-4.00 (m, 14H), 5.00 (m, 2H), 6.60 (s,2H), 6.75 (s, 1H), 6.77 (s, 1H), 7.90 (s, 1H), 8.50 (s, 1H).

cis- 2-5-(N'-n-Butyl-N'-hydroxyureidyl)-3-methoxy-4-propoxyphenyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran (compound 41, table 2)

¹ H NMR (CDCl₃): 1.00 (t, 3H), 1.2 (t, 3H), 1.5 (m, 2H), 1.75 (m, 2H),1.8 (m, 2H), 2.00 (m, 2H), 2.50 (m, 2H), 3.70 (t, 2H), 3.80-4.00 (m,14H), 5.00 (m, 2H), 6.60 (s, 2H), 6.75 (s, 1H), 6.77 (s, 1H), 7.90 (s,1H), 8.50 (s, 1H).

EXAMPLE 13

trans-2-(5-(N-Hydroxy-N-substituted-minocarbonyl)-aminomethyl-4-propoxy-3-methoxy)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(compounds 33-37, FIG. 8)

3-Methoxy-4-propoxy-5-iodobenzaldehyde (compound 125, FIG. 5)

5-Iodovanillin (25 g, 0.09 mol) in DMF (100 mL) was treated withpotassium carbonate (32 g, 0.23 mol) and n-propyl iodide (52 g, 0.3 mol,31 mL) and heated for 16 hours. The solution was allowed to cool to roomtemperature and then poured into water (500 mL) and extracted with ether(3×250 mL). The organic layers were combined and washed with water andsaturated sodium chloride solution, and then dried over magnesiumsulfate. The organic layer was evaporated by distillation underdiminished pressure to an oil, and then purified by columnchromatography (silica, 7:3 petroleum ether-ethyl acetate), to providean amber colored solid (26.9 g, 93%). ¹ H NMR (CDCl₃) 1.07 (t, 3H), 1.85(m, 2H), 3.89 (s, 3H), 4.06 (t, 3H), 7.39 (s, 1H), 7.84 (s, 1H), 9.81(s, 1H).

1 -(3-Methoxy-4-propoxy-5-iodophenyl)-4-(3,4,5-trimethoxyphenyl)-1,4-butanedione (compound 126, FIG. 5)

3,4,5-Trimethoxyphenylvinylketone (11.6 g, 0.052 mol),3-methoxy-4-propoxy-5-iodobenzaldehyde (13.8 g, 0.043 mol), and3-benzyl-5-(2-hydroxyethyl)-4-methylthiazolium chloride (4.6 g, 0.017mol) were sired in triethylamine (35 mL) at 60° C. for 16 hours. Thesolution was then acidified, poured into chloroform (500 mL) and washedwith 10% HCl, water and saturated aqueous sodium chloride. The organiclayer was dried over magnesium sulfate, concentrated under reducedpressure, and the product isolated from petroleum ether-ethyl acetate toprovide pale yellow microcrystals (27 g, 92%). m.p. 119-121 C. ¹ H NMR(CDCl₃) 1.07 (t, 3H), 1.86 (m, 2H), 3.40 (dd, 4H), 3.88 (s, 3H), 3.92(s, 9H), 4.04 (t, 2H), 7.29 (d, 1H), 8.07 (d, 1H).

1-(3-Methoxy-4-propoxy-5-cyano)-4-(3,4,5-trimethoxyphenyl)-1,4-butanedione(compound 132, FIG. 6)

1-(3-Methoxy-4-propoxy-5-iodophenyl)-4-(3,4,5-trimethoxyphenyl)-1,4-butanedione (10.0 g, 18.4 mmol) and CuCN (16.6 g, 0.184 mol) in DMF(100 mL) were heated at 14° C. for 2 hours. The solution was cooled andpoured onto water (500 mL). The aqueous phase was extracted withchloroform (3×250 mL). The organic layers were combined, washed withwater and saturated aqueous sodium chloride, and then dried overmagnesium sulfate. The resulting material was concentrated, and theproduct isolated from hexane-ethyl acetate as pale yellow microcrystals(7.75 g, 95%).

1-(³-Methoxy-4-propoxy-5-cyano)-4-(3,4,5-trimethoxyphenyl)-1,4-butanediol(compound 133, FIG. 6)

To 1-(3-methoxy-4-propoxy-5-cyano)-4-(3,4,5-trimethoxyphenyl)-1,4-butanedione(4.0 g, 9.06 mmol) in 5:1 methanol/THF (125 mL) was added sodiumborohydride (617 mg, 16.3 mmol), and the solution stirred overnight.Solvent was removed under reduced pressure and the crude residue wasdissolved in dichloromethane (250 mL). The solution was washed withwater and brine, dried over magnesium sulfate, and then concentratedunder reduced pressure. It was used without further purification.

trans-2-(3-Methoxy-4propoxy-5-Cyano)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(compound 134, FIG. 6)

To-(3-methoxy-4-propoxy-5-cyano)-4-(3,4,5-trimethoxyphenyl)-1,4-butanediol(9.0 mmol) in chloroform (100 mL) at 0° C. was added dropwisetrifluoroacetic acid (36 mmol, 2.8 mL) in chloroform (50 mL) over 30minutes. The solution was then stirred at 0° C. overnight. The solutionwas washed with 10% potassium carbonate, water, and saturated aqueoussodium chloride, and then dried over magnesium sulfate. The solution wasthen concentrated under reduced pressure and the trans isomer isolatedas colorless needles from petroleum ether-ethyl acetate (3.06 g, 79%).

trans-2-(3-Methoxy-4-propoxy-5-aminomethyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(compound 135, FIG. 6)

Totrans-2-(3-methoxy-4-propoxy-5-cyano)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(500 mg, 1.17 mmol) in ThF (25 mL) was added sodium borohydride (80 mg,2.1 mmol) and boron trifluoride etherate (400 mg, 2.8 mmol) dropwiseover thirty minutes. The solution was then refluxed for four hours,cooled, treated with a few drops of 10% HCl, poured into water andextracted with dichioromethane. The organic layers were combined, washedwith water and saturated aqueous sodium chloride, and then dried overmagnesium sulfate. The dried solution was concentrated, and thenpurified by column chromatography (silica, 9:1dichloromethane-methanol). The product was isolated as an amber oil (207mg, 41%).

trans-2- 3-Methoxy-4-propoxy-5-(4-nitrophenoxycarbonyl)-aminomethyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(compound 136, FIG. 6)

Trans-2-(3-methoxy-4-propoxy-5-aminomethyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran (207 mg, 0.048 mmol), nitrophenylchloroformate (106 mg, 0.53 mmol),and diisopropylethylamine (69 mg, 0.53 mmol) were stirred indichloromethane (3 mL) for 12 hours. The solution was then concentratedand purified by column chromatography (silica, 85:15dichloromethane-ether). The product was isolated as a yellow oil (251mg, 88%).

trans-2-3-Methoxy-4-propoxy-5-(N-hydroxyaminocarbonyl)-arninomethyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(compound 33, FIG. 6)

trans-2- 3-methoxy-4-propoxy-5-(4-nitrophenoxy carbonyl)aminomethyl!-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran (57 mg, 0.096mmol), hydroxylamine hydrochloride (10 mg, 0.15 mmol), anddiisopropylethylamine (40 mg, 0.3 mmol) were stirred in dichloromethane(3 mL) for 24 hours. The solution was then diluted with dichloromethaneand washed with 10% sodium bicarbonate, water, and saturated aqueoussodium chloride, and then dried over magnesium sulfate. The solution wasthen concentrated, and purified by preparative TLC (silica, 95:5dichloromethane-methanol). The pure material was isolated as a colorlessoil (16 mg, 34%). ¹ H NMR (CDCl₃) 1.0 (t, 3H), 1.75 (m, 2H), 2.0 (m,2H), 2.44 (m, 2H), 3.86 (m, 12H), 3.91 (t, 2H), 4.42 (d, 2H), 5.13 (t,2H), 6.3-7.1 (m, 4H).

trans-2-3-Methoxy-4-propoxy-5-(N-hydroxy N-methylaminoearbonyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydro-furan (compound 34, FIG. 6)

trans-2-3-methoxy-4-propoxy-5-(N-hydroxyaminocarbonyl)aminomethyl-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran (42 mg, 0.070mmol), N-methyl hydroxylamine hydrochloride (9 mg, 0.11 mmol), anddiisopropylethylamine (0.33 mmol) in dichloromethane (3 mL) were stirredfor 24 hours. The solution was diluted with dichloromethane and washedwith 10% sodium bicarbonate, water and saturated sodium chloride, andthen dried over magnesium sulfate. The solution was then concentrated,and purified by preparative TLC (silica, 95:5 dichloromethane-methanol).The product was isolated as a colorless oil weighing (14 mg, 40%). ¹ HNMR (CDCl₃) 1.0 (t, 3H), 1.75 (m, 2H), 2.0 (m, 2H), 2.44 (m, 2H), 3.04(s, 3H), 3.86 (m, 12H), 3.91 (t, 2H), 4.42 (d, 2H), 5.13 (m, 2H),6.3-7.1 (m, 4H).

trans-2-3-Methoxy-4-propoxy-5-(N-Hydroxy-N-isopropylaminocarbonyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran (compound 35, FIG. 6)

trans-2-3-methoxy-4-propoxy-5-(N-hydroxyaminocarbonyl) aminomethyl-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran (40 mg, 0.067 mmol),N-isopropyl hydroxylamine hydrochloride (11 mg, 0.1 mmol), anddiisopropylethylamine (0.2 mmol) were stirred in dichloromethane (3 mL)for 24 hours. The solution was diluted with dichloromethane, washed with10% sodium bicarbonate, water and saturated aqueous sodium chloride, andthen dried over magnesium sulfate. The solution was concentrated, andthen purified by preparative TLC (silica, 95:5dichloromethane-methanol). The product was isolated as a colorless solid(16 mg, 45%). ¹ H NMR (CDCl₃) 1.0 (t, 3H), 1.1 (d, 6H), 1.75 (m, 2H),2.0 (m, 2H), 2.44 (m, 2H), 3.04 (s, 3H), 3.86 (m, 12H), 3.91 (t, 2H),4.40 (m, 1H), 4.42 (d, 2H), 5.13 (m, 2H) 6.3-7.1 (m, 4H).

trans-2-3-Methoxy-4-propoxy-5-(N-hydroxy-N-cyclohexylaminocarbonyl)aminomethyl-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran (Compound 36,FIG. 6)

trans-2-3-methoxy-4-propoxy-5-(N-hydroxy-N-isopropylaminocarbonyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran(59 mg, 0.1 mmol), N-cyclohexyl hydroxylamine hydrochloride (23 mg, 0.15mmol), and diisopropylethylamine (0.2 mmol) were stirred indichloromethane (3 mL) for 24 hours. The solution was diluted withdichloromethane, washed with 10% sodium bicarbonate, water and saturatedsodium chloride, and then dried over magnesium sulfate. The solution wasthen concentrated and purified by preparative TLC (silica, 95:5dichloromethane-methanol), to provide the product a colorless solid (24mg.,42%). ¹ H NMR (CDCl₃) 1.0 (t, 3H), 1.1-1.8 (m, 10H), 1.75 (m, 2H),2.0 (m, 2H), 2.44 (m, 2H), 3.04 (s, 3H), 3.86 (m, 13H), 3.91 (t, 2H),4.42 (d, 2H), 5.13 (m, 2H), 6.3-7.1 (m, 4H).

trans-2-3-Methoxy-4-propoxy-5-(N-hydroxy-N-benzylaminocarbonyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydro-furan(compound 37, FIG. 6)

trans-2-3-methoxy-4-propoxy-5-(N-hydroxy-N-cyclohexylaminocarbonyl)aminomethyl-5-(3,4,5-trimethoxyphenyl)-tetrahydrofuran (53 mg, 0.089mmol), N-benzyl hydroxylamine hydrochloride (21 mg, 0.133 mmol),diisopropylethylamine (0.27 rnmol), and stirred in dichloromethane (3mL) for 24 hours. The reaction was diluted with dichloromethane and theorganic layer was washed with 10% sodium bicarbonate, water, andsaturated aqueous sodium chloride, and then dried over magnesiumsulfate. The solution was then concentrated and purified by preparativeTLC (silica, 95:5 dichloromethane-methanol), and the product isolated asa colorless oil (22 mg.,42%). ¹ H NMR (CDCl₃) 1.0 (t, 3H), 1.75 (m, 2H),2.0 (m, 2H), 2.44 (m, 2H), 3.86 (m, 12H), 3.91 (t, 2H), 4.42 (d, 2H),4.65 (s, 2H), 5.13 (t, 2H), 6.3-7.1 (m, 4H), 7.3-7.5 (m, 5H).

EXAMPLE 14

Cis and trans-5-(3,4,5-Trimethoxyphenyl)-2-(3-methoxy-4-propoxy-5-hydroxyethylsulfonyl)-tetrahydrothiophene (Compound 42, FIG. 5)

Compounds 125 and 126 were prepared as described above.

1-(3-Methoxy-4-propoxy-5-hydroxyethylthiophenyl)-4-(3,4,5-trimethoxyphenyl)-butane-1,4-dione(Compound 127, FIG. 5)

To a solution of1-(3-methoxy-4-propoxy-5-iodophenyl)-4-(3,4,5-trimethoxyphenyl)-butane-1,4-dione(13.55 g, 25 mmol) in 100 mL of DMF was added 13.5 g (212.43 mmol) ofcopper powder. The slurry was heated at 130° C. for 2 hours and asolution of 2-hydroxyethyldisulfide (4.88 mL, 40 mmol) in 25 mL of DMFadded. Heating was continued for an additional 20 hours. The mixture wasthen cooled, filtered and washed with ethyl acetate. Water (125 mL) wasadded and the mixture extracted with ethyl acetate. The organic layerwas washed several times with water, dried over magnesium sulfate andevaporated. The crude product was purified by flash chromatography onsilica gel using 1:1 hexane/ethyl acetate as eluent (7.5 g, 61%). ¹ HNMR (CDCl₃): 1.07 (t, 3H), 1.85 (m, 2H), 2.38 (t, 1H), 3.13 (t, 2H),3.41 (s, 4H), 3.72 (q, 2H), 3.90 (s, 3H), 3.93 (s, 9H), 4.07 (t, 2H),7.29 (s, 2H), 7.49 (d, 1H), 7.73 (d, 1H).

1-(3-Methoxy-4-propoxy-5-hydroxyethylsulfonylphenyl)-4-(3,4,5-trimethoxyphenyl)-butane-1,4-dione (compound 128, FIG. 5)

A suspension of magnesium monoperoxyphthalic acid (18.51 g, 37.42 mmol)in 60 mL of water was added to1-(3-methoxy-4-propoxy-5-hydroxyethylthiophenyl)-4-(3,4,5-trimethoxyphenyl)-butane-1,4-dione (9.84 g, 20 mmol) in 180 mL of acetonitrile. The solution wasstirred for 2 hours, and then 600 mL of water added, and the mixtureextracted with methylene chloride. The organic layer was washed with 5%sodium hydroxide solution, water, and saturated aqueous sodium chlorideand then dried with magnesium sulfate and evaporated to a white solidThe solid was purified by flash column chromatography using 2:1 ethylacetate/hexane (7.98 g, 76%). ¹ H NMR (CDCl₃): 1.04 (t, 3H), 1.88 (m,2H), 2.77 (bs, 1H), 3.43 (s, 4H), 3.66 (t, 2H), 3.91 (s, 9H), 3.94 (s,3H), 3.99 (m, 2H), 4.21 (t, 2H), 7.27 (s, 2H), 7.83 (d, 1H), 8.21 (d,1H).

1 -(3-Methoxy-4-propoxy-5-dimethyl-tert-butylsiloxyethylsulfonylphenyl)-4-(3,4,5-trimethoxyphenyl)-butane-1,4-dione (compound 129, FIG. 5)

A suspension of 5.24 g (10 mmol) of1-(3-methoxy-4-propoxy-5-hydroxyethylsulfonylphenyl)-4-(3,4,5-trimethoxyphenyl)-butane-1,4-dione, tert-butyldimethylsilyl chloride (1.81 g, 12 mmol), andimidazole (0.82 g, 12.05 mmol) in 55 mL of methylene chloride wasstirred at room temperature for 12 hours. The solution was filtered,evaporated to an oil, and then purified by flash chromatography onsilica gel using 1:1 hexane/ethyl acetate (5.42 g, 85%). 1H NMR (CDCl₃):-0.07 (s, 6H), 0.75 (s, 9H), 1.06 (t, 3H), 1.90 (m, 2H), 3.43 (s, 4H),3.68 (t, 2H), 4.00 (t, 2H), 4.22 (t, 2H), 7.29 (s, 2H), 7.80 (d, 1H),8.20 (d. 1H).

1-(3-Methoxy-4-propoxy-5-dimethyl-tert-butylsiloxyethylsulfonylphenyl)-4-(3,4,5-trimethoxyphenyl)-butane-1,4-diol(compound 130, FIG. 5).

To a solution of1-(3-methoxy-4-propoxy-5-dimethyl-tert-butylsiloxyethylsulfonylphenyl)-4-(3,4,5-trimethoxyphenyl)-butane-1,4-dione (6.38 g, 10 mmol) in 90 mL of methanol and 25 mLtetrahydrofuran was added dropwise sodium borohydride (903 mg, 23.88mmol) in 40 mL of water. After the addition was completed, the reactionmixture was stirred at room temperature for 3 hours, quenched with waterand extracted with dichloromethane. The organic layer was dried overmagnesium sulfate, filtered and evaporated to a foam (4.57 g, 71%). ¹ HNMR (CDCl₃): -0.05 (s, 6H), 0.77 (s, 9H), 1.04(t, 3H), 1.86 (m, 6H),3.65 (m, 2H), 3.74 (m, 2H), 3.84 (s, 3H), 3.87 (s, 6H), 3.89 (s, 3H),3.97 (t, 2H), 4.11 (t, 2H), 4.72 (m, 2H), 6.57 (s, 1H), 7.22 (s, 1H),7.43 (s, 1H).

trans-2-(3-Methoxy-4-propoxy-5-dimethyl-tert-butylsiloxyethylsulfonyl)-5-(3,4,5-trimethoxyphenyl)-tetrahydrothiophene(compound 131, FIG. 5).

A suspension of P₄ S₁₀ (2.90 g, 6.53 mmol) in 48 mL of pyridine washeated at 120° C. for 75 minutes. To the suspension was added a solutionof 1-(3-methoxy-4propoxy-5-dimethyl-tert-butylsiloxyethylsulfonylphenyl)-4-(3,4,5-trimethoxyphenyl)-butane-1,4-diol(3.21 g, 5 mmol) in 20 mL of pyridine. The temperature was reduced to90° C. and stirring continued for an additional 90 minutes. Ice andwater were then added, and the mixture extracted with methylenechloride. The organic layer was washed with water, 5% HCl, sodiumbicarbonate and saturated sodium chloride solution, and then dried withmagnesium sulfate, filtered and evaporated. The resulting cis and transthiophenes were separated by HPLC using Water's prep Nova-Pak HR silicacartridge (9:1 hexane: ethyl acetate) to provide 580 mg (20%) of thetrans isomer and 145 mg (5%) of the cis isomer. Trans isomer. NMR(CDCl₃): -0.05 (s, 6H), 0.80 (s, 9H), 1.10 (t, 3H), 1.95 (m, 2H), 2.05(m, 2H), 2.6 (m, 2H), 3.7 (t, 3H), 3. 95 (m, 12H), 4.00 (t, 3H), 4.2 (t,3H), 4.9 (m, 2H), 6.8 (s, 2H), 7.40 (d, 1H), 7.60 (d, 1H).

cis andtrans-5-(3,4,5-Trimethoxyphenyl)-2-(3-methoxy-4propoxy-5-hydroxyethylsulfonyl)-tetrahydrothiophene(compound 38, FIG. 5)

To an ice-water cooled solution oftrans-2-(3,4,5-trimethoxyphenyl)-5-(3-methoxy-4-propoxy-5-dimethyl-tert-butylsiloxyethylsulfonyl)-tetrahydrothiophene(80 mg, 0.125 mmol) in 4 mL of dry tetrahydrofuran was added dropwise asolution of tetrabutylammonium fluoride in 2 mL of tetrahydrofuran. Thesolution was stirred at room temperature for two hours, and then thesolvent evaporated under vacuum and passed through a small column ofsilica gel using 1:1 hexane:ethyl acetate to give a white solid (60 mg,91%). ¹ H NMR (CDCl₃): 1.10 (t, 3H), 1.95 (m, 2H), 2.05 (m, 2H), 2.6 (m,2H), 3.7 (t, 3H), 3.95 (m, 12H), 4.00 (t, 3H), 4.15 (t, 3H), 4.9 (m,2H), 6.8 (s, 2H), 7.40 (d, 1H), 7.60 (d, 1H).

EXAMPLE 15

1-(3-Nitro-4-propoxy-5-methoxyphenyl)-3-(3,4,5-trimethoxyphenyl)-cyclopentane(compound 143, FIG. 7).

This compound is synthesized as set out in detail in FIG. 7, followingthe procedure as outlined by Graham, D. W. et al. ("1,3-DiarylCyclopentanes: A New Class of Potent PAF Receptor Antagonists", 197thACS National Meeting, Dallas, Tex., Apr. 9-14, 1989, Division ofMedicinal Chemistry, poster No. 25) starting from compound 114 (FIG. 7).Reduction and functionalization of this compound is carried out similarto that described for compounds 119-121 (FIG. 3).

EXAMPLE 16

2-(5-(N-hydroxy-N-methylaminocarbonyl)-amino(substituted)-3-methoxy-4-propoxy)-5-(3,4,5-trimethoxyphenyl)-cyclopentane (compound 158, FIG. 8)

3,4,5-Trimethoxyacetophenone is converted to the corresponding acetylene(compound 146, FIG. 8) using the procedure outlined by Negishi et al.,J. Org. Chem. 45, 2526 (1980), using diethylchlorophosphate and lithiumdiisopropylamide. 5-Iodovanillin is alkylated with n-propyl iodide asdescribed in Example 6. The resulting alkylated aldehyde (compound 125,FIG. 8) is converted to the corresponding nitrile (compound 148, FIG. 8)as described in Example 13. Compound 148 is converted to the terminalalkyne (compound 149, FIG. 8) via the Corey-Fuchs procedure (Corey, E.J. et al., Tetra. Lett. 3769 (1972)). The E-vinyl iodide (compound 150,FIG. 8) is synthesized from compound 149 using catechol borane andiodine. Heat acetylene and catechol borate at 60° C. for 3 hours. Stirresulting boronate ester with water for 2 hours. Filter boronic acid toremove catechol. Dissolve the boronic acid in THF and sodium hydroxide(3 equivalent). Treat with iodine (1 equivalent) and stir for 30minutes. The product was isolated by standard extractive workup andcolumn chromatography. The iodide (compound 150) and the vinyl alane(compound 147) are coupled using a palladium catalyst to yield compound151. Compound 151 is converted to the allylic chloroacetate (compound152) via palladium catalysis. Compound 152 is converted to the BOCprotected amine, and the acetate removed via saponification to yieldcompound 153. Compound 153 is saturated by hydrogenation and the alcoholmoieties converted to mesylates (compound,154). Cyclization of compound154 to the pyrrole (compound 155) is accomplished with mild base.Compound 155 is then reduced and the resultant amine (156) converted tothe hydroxyurea (157) (vide infra). Finally, the pyrrole is deprotectedusing trifluoroacetic acid and anisole in dichloromethane at zerodegrees to yield the compound 158.

EXAMPLE 17

Synthesis of 2,4-Diaryl Tetrahydrofuran and Tetrahydrothiophene(Compounds 167 and 168, FIG. 9)

3,4,5-Trimethoxyacetophenone is oxidized to the correspondinghydroxyketone (compound 159, FIG. 9) and then protected as the silylether (compound 160, FIG. 9). Compound 160 is converted to thecorresponding olefin (compound 161, FIG. 9) using a Wittig reaction.Compound 161 is converted to the primary bromide compound 162 with 9-BBN(9-borabicyclo 3.3.1!nonane). Compound 162 is then converted to theGrignard reagent and treated with the compound 148 to yield compound163. The alcohol protecting group in compound 163 is removed with TBAF(tetrabutylammonium fluoride) and the resulting diol (compound 164)converted to the tetrahydrofuran (165) or tetrahydrothiophene (166)using procedures described above. Compounds 167 and 168 are converted tothe hydroxyureas (167) and (169) by procedures described above.

II. Pharmaceutical Compositions

Humans, equine, canine, bovine and other animals, and in particular,mammals, suffering from disorders mediated by PAF or products of5-lipoxygenase can be treated by administering to the patient aneffective amount of one or more of the above-identified compounds or apharmaceutically acceptable derivative or salt thereof in apharmaceutically acceptable carrier or diluent. The active materials canbe administered by any appropriate route, for example, orally,parenterally, intravenously, intradermally, subcutaneously, ortopically, in liquid, cream, gel or solid form.

As used herein, the term pharmaceutically acceptable salts or complexesrefers to salts or complexes that retain the desired biological activityof the above-identified compounds and exhibit minimal undesiredtoxicological effects. Nonlimiting examples of such salts are (a) acidaddition salts formed with inorganic acids (for example, hydrochloricacid, hydrobromic acid, sulfuric acid, phosphoric acid, nitric acid, andthe like), and salts formed with organic acids such as acetic acid,oxalic acid, tartaric acid, succinic acid, malic acid, ascorbic acid,benzoic acid, tannic acid, pamoic acid, alginic acid, polyglutamic acid,naphthalenesulfonic acid, naphthalenedisulfonic acid, andpolygalacturonic acid; (b) base addition salts formed with metal cationssuch as zinc, calcium, bismuth, barium, magnesium, aluminum, copper,cobalt, nickel, cadmium, sodium, potassium, and the like, or with acation formed from ammonia, N,N-dibenzylethylene-diamnine,D-glucosamine, tetraethylammonium, or ethylenediamine; or (c)combinations of (a) and (b); e.g., a zinc tannate salt or the like.

The active compound is included in the pharmaceutically acceptablecarrier or diluent in an amount sufficient to deliver to a patient atherapeutically effective amount without causing serious toxic effectsin the patient treated. A preferred dose of the active compound for allof the above-mentioned conditions is in the range from about 0.01 to 300mg/kg, preferably 0.1 to 100 mg/kg per day, more generally 0.5 to about25 mg per kilogram body weight of the recipient per day. A typicaltopical dosage will range from 0.01-3% wt/wt in a suitable carrier. Theeffective dosage range of the pharmaceutically acceptable derivativescan be calculated based on the weight of the parent compound to bedelivered. If the derivative exhibits activity in itself, the effectivedosage can be estimated as above using the weight of the derivative, orby other means known to those skilled in the art.

The compound is conveniently administered in any suitable unit dosageform, including but not limited to one containing 1 to 3000 mg,preferably 5 to 500 mg of active ingredient per unit dosage form A oraldosage of 25-250 mg is usually convenient

The active ingredient should be administered to achieve peak plasmaconcentrations of the active compound of about 0.01-30 mM, preferablyabout 0.1-10 mM. This may be achieved, for example, by the intravenousinjection of a solution or formulation of the active ingredient,optionally in saline, or an aqueous medium or administered as a bolus ofthe active ingredient.

The concentration of active compound in the drug composition will dependon absorption, distribution, inactivation, and excretion rates of thedrug as well as other factors known to those of skill in the art. It isto be noted that dosage values will also vary with the severity of thecondition to be alleviated. It is to be further understood that for anyparticular subject, specific dosage regimens should be adjusted overtime according to the individual need and the professional judgment ofthe person administering or supervising the administration of thecompositions, and that the concentration ranges set forth herein areexemplary only and are not intended to limit the scope or practice ofthe claimed composition. The active ingredient may be administered atonce, or may be divided into a number of smaller doses to beadministered at varying intervals of time.

Oral compositions will generally include an inert diluent or an ediblecarrier. They may be enclosed in gelatin capsules or compressed intotablets. For the purpose of oral therapeutic administration, the activecompound can be incorporated with excipients and used in the form oftablets, troches, or capsules. Pharmaceutically compatible bindingagents, and/or adjuvant materials can be included as part of thecomposition.

The tablets, pills, capsules, troches and the like can contain any ofthe following ingredients, or compounds of a similar nature: a bindersuch as microcrystalline cellulose, gum tragacanth or gelatin; anexcipient such as starch or lactose, a disintegrating agent such asalginic acid, Primogel, or corn starch; a lubricant such as magnesiumstearate or Sterotes; a glidant such as colloidal silicon dioxide; asweetening agent such as sucrose or saccharin; or a flavoring agent suchas peppermint, methyl salicylate, or orange flavoring. When the dosageunit form is a capsule, it can contain, in addition to material of theabove type, a liquid carrier such as a fatty oil. In addition, dosageunit forms can contain various other materials which modify the physicalform of the dosage unit, for example, coatings of sugar, shellac, orother enteric agents.

The active compound or pharmaceutically acceptable salt or derivativethereof can be administered as a component of an elixir, suspension,syrup, wafer, chewing gum or the like. A syrup may syrup may contain, inaddition to the active compounds, sucrose as a sweetening agent andcertain preservatives, dyes and colorings and flavors.

The active compound or pharmaceutically acceptable derivatives or saltsthereof can also be mixed with other active materials that do not impairthe desired action, or with materials that supplement the desiredaction, such as antibiotics, antifungals, antiinflammatories, orantiviral compounds.

Solutions or suspensions used for parenteral, intradermal, subcutaneous,or topical application can include the following components: a sterilediluent such as water for injection, saline solution, fixed oils,polyethylene glycols, glycerine, propylene glycol or other syntheticsolvents; antibacterial agents such as benzyl alcohol or methylparabens; antioxidants such as ascorbic acid or sodium bisulfite;chelating agents such as ethylenediaminetetraacetic acid; buffers suchas acetates, citrates or phosphates and agents for the adjustment oftonicity such as sodium chloride or dextrose. The parental preparationcan be enclosed in ampoules, disposable syringes or multiple dose vialsmade of glass or plastic.

If administered intravenously, preferred carriers are physiologicalsaline or phosphate buffered saline (PBS).

In one embodiment, the active compounds are prepared with carriers thatwill protect the compound against rapid elimination from the body, suchas a controlled release formulation, including implants andmicroencapsulated delivery systems. Biodegradable, biocompatiblepolymers can be used, such as ethylene vinyl acetate, polyanhydrides,polyglycolic acid, collagen, polyorthoesters, and polylactic acid.Methods for preparation of such formulations will be apparent to thoseskilled in the art. The materials can also be obtained commercially fromAlza Corporation and Nova Pharmaceuticals, Inc.

Liposomal suspensions may also be pharmaceutically acceptable carriers.These may be prepared according to methods known to those skilled in theart, for example, as described in U.S. Pat. No. 4,522,811 (which isincorporated herein by reference in its entirety). For example, liposomeformulations may be prepared by dissolving appropriate lipid(s) (such asstearoyl phosphatidyl ethanolamine, stearoyl phosphatidyl choline,arachadoyl phosphatidyl choline, and cholesterol) in an inorganicsolvent that is then evaporated, leaving behind a thin film of driedlipid on the surface of the container. An aqueous solution of the activecompound or its monophosphate, diphosphate, and/or triphosphatederivatives are then introduced into the container. The container isthen swirled by hand to free lipid material from the sides of thecontainer and to disperse lipid aggregates, thereby forming theliposomal suspension.

III. Biological Activity

A wide variety of biological assays have been used to evaluate theability of a compound to act as a PAF receptor antagonist, including theability of the compound to bind to PAF receptors, and the effect of thecompound on various PAF mediated pathways. Any of these known assays canbe used to evaluate the ability of the compounds disclosed herein to actas PAF receptor antagonists.

For example, PAF is known to induce hemoconcentration and increasedpermeability of microcirculation leading to a decrease in plasma volume.PAF mediated acute circulatory collapse can be used as the basis of anassay to evaluate the ability of a compound to act as a PAF antagonist,by analyzing the effect of the compound on PAF induced decreased plasmavolume in an animal model such as mouse.

Endotoxemia causes the release of chemical mediators includingeicosanoids, PAF, and tumor necrosis factor (TNF) that stimulate avariety of physiologic responses including fever, hypotension,leukocytosis, and disturbances in glucose and lipid metabolism.Endotoxemia can result in severe shock and death. Endotoxin-inducedmouse mortality is a useful animal model to evaluate the pharmacologicaleffect of compounds on endotoxic shock.

Two other common assays used to evaluate the ability of a compound toact as a PAF receptor antagonist are platelet aggregation in vitro andhypotension in rats (Shen, et al., "The Chemical and BiologicalProperties of PAF Agonists, Antagonists, and Biosynthetic Inhibitors",Platelet-Activating Factor and Related Lipid Mediators, F. Snyder, Ed.Plenum Press, New York, N.Y. 153 (1987).)

A wide variety of biological assays have also been used to evaluate theability of a compound to inhibit the enzyme 5-lipoxygenase. For example,a cytosol 5-lipoxygenase of rat basophilic leukemia cells (RBL) has beenwidely utilized in studies on leukotriene biosynthesis. Compounds thatinhibit 5-lipoxygenase decrease the levels of leukotrienes.

Another biological assay used to evaluate the ability of a compound toinhibit the enzyme 5-lipoxygenase is based on the classicpharmacological model of inflammation induced by the topical applicationof arachidonic acid to the mouse ear. On application, arachidonic acidis converted by 5-lipoxygenase to various leukotrienes (and othermediators), which induce changes in blood flow, erythema, and increasevasodilation and vasopermeability. The resulting edema is measured bycomparing the thickness of the treated ear to a control ear. Agents thatinhibit 5-lipoxygenase reduce the edematous response, by lowering theamounts of biochemical mediators formed from arachidonic acid.

2,5-Diaryl tetrahydrofturans and tetrahydrothiophenes disclosed hereinwere tested for their ability to act as PAF receptor antagonists andinhibit the enzyme 5-lipoxygenase, as described in detail below. Thebiological activity of other compounds within Formulas I, II, and IIIcan be evaluated easily using the below-described assays or other assaysknown to those skilled in the art

EXAMPLE 18 Ability of Compound to Bind to PAF Receptors

a) Preparation of Human Platelet Membranes

Human platelet membranes were prepared from platelet concentratesobtained from the American Red Cross Blood Services (Dedham, Mass.).After several washes with platelet wash solution (150 mM NaCl, 10 mMTris, and 2 mM EDTA, pH 7.5), the platelet pellets were resuspended in 5mM MgCl₂, 10 mM Tris, and 2 mM EDTA at pH 7.0. The cells were thenquickly frozen with liquid nitrogen and thawed slowly at roomtemperature. The freezing and thawing procedure was repeated at leastthree times. For further fractionation of membrane fragments, the lysedmembrane suspension was layered over the top of a discontinuous sucrosedensity gradient of 0.25, 1.03, and 1.5M sucrose prepared in 10 mMMgCl₂, 10 mM Tris and 2 mM EDTA, pH 7.0, and centrifuged at 63,500×g for2 hr. The membrane fractions banding between 0.25 and 1.03M (membrane A)and between 1.03 and 1.5M (membrane B) were collected separately. Theprotein concentration of the membrane preparations was determined byLowry's method with bovine serum albumin (BSA) as the standard. Themembranes were then separated into smaller fractions (4 ml each) andstored at -80° C. and thawed before use.

b) ³ H!PAF Binding inhibition

The ability of ³ H!PAF to bind to specific receptors on human plateletmembranes was evaluated at optimal conditions at pH 7.0 and in thepresence of 10 mM MgCl₂. Membrane protein (100 ug) was added to a final0.5 ml solution containing 0.15 pmol (0.3 nM concentration) of ³ H!PAFand a known amount of unlabeled PAF or PAF receptor antagonist in 10 mMMgCl₂, 10 mM Tris and 0.25% BSA at pH 7.0. After incubation for fourhours at 0° C., the bound and unbound ³ H!PAF were then separatedthrough a Whatman GF/C glass fiber filter under vacuum. No degradationof filter bound ³ H!PAF has been detected under this assay condition.The nonspecific binding was defined as the total binding in the presenceof excess unlabeled PAF (1 mM) where no further displacement was foundwith higher concentrations of either unlabeled PAF or PAF analogs or PAFreceptor antagonists. The specific binding was defined as the differencebetween total binding and nonspecific binding.

To determine the relative potency of tested compounds, ³ H!PAF bindingin the presence of inhibitors was normalized in terms of percentinhibition by assigning the total binding in the absence of inhibitorsas 0% inhibition and the total binding in the presence of 1 mM unlabeledPAF as 100%. The percent inhibition by the compound can be calculated bythe formula expressed below:

    % inhibition= (Total binding--total binding in the presence of compound)/nonspecific binding!×100%

The IC₅₀ was calculated as the concentration of the inhibitor necessaryto obtain 50% inhibition of the specific ³ H!PAF binding and wascalculated by a nonlinear regression computer software program, GraphPadInplot, version 3.0 (GraphPad software, San Diego, Calif.). Tables 1-4provide the IC₅₀ values for a number of 2,5-diaryl tetrahydrothiophenesand tetrahydrofurans.

                                      TABLE 1    __________________________________________________________________________     ##STR19##                                 PAF    Cmpd No         X A         B       C   IC.sub.50                                      *5-LO    __________________________________________________________________________    1    S SCH.sub.2 CH.sub.2 NH.sub.2                     OCH.sub.3                             OCH.sub.3    2    S O.sub.2 CH.sub.2 CH.sub.2 NH.sub.2                     OCH.sub.3                             OCH.sub.3                                 >1000                                      0.0%    3    O HCH.sub.2 Ph                     OCH.sub.2 CH.sub.2 CH.sub.3                             OCH.sub.3                                      21.5%    4    O NHCH.sub.2 CH.sub.2 OH                     OCH.sub.2 CH.sub.2 CH.sub.3                             OCH.sub.3                                 136  0.0%    5    O N(CH.sub.2 CHCH.sub.2).sub.2                     OCH.sub.3 CH.sub.2 CH3                             OCH.sub.3                                 98   10.0    6    S NHCH.sub.2 Ph                     OCH.sub.3                             OCH.sub.3                                 >1000                                      4.1%    7    S NHCH.sub.2 Ph                     OCH.sub.2 CH.sub.2 CH.sub.3                             OCH.sub.3                                 >1000                                      16.2%    8    S NHCH.sub.2 CH.sub.2 OH                     OCH.sub.3                             OCH.sub.3                                 157  6.0%    9    S NCH.sub.2 CH.sub.2 OH.sub.2                     OCH.sub.2 CH.sub.2 CH.sub.3                             OCH.sub.3                                 91.5 18.8%    10   S N(CH.sub.2 CHCH.sub.2).sub.2                     OCH.sub.3                             OCH.sub.3    11   S N(CH.sub.2 CHCH.sub.2).sub.2                     OCH.sub.2 CH.sub.2 CH.sub.3                             OCH.sub.3    __________________________________________________________________________     *Inhibitions shown by percentage are at 10 μM

                  TABLE 2    ______________________________________     ##STR20##                               IC.sub.50                               PAF    5-LO    No.  Isomer  X     A       (nM)   (μM)                                           5-LO inhibition*    ______________________________________    12.  trans   O     H       30          22%    13.  trans   O     CH.sub.3                               17     6.9    38.  cis     O     CH.sub.3 CH.sub.2                               5.1    0.48    14.  trans   O     CH(CH.sub.3).sub.2                               57          40%    39.  trans   O     CH.sub.3 (CH.sub.2).sub.3                               34.5   0.3    15.  trans   O     C(CH.sub.3).sub.3                               25     2.9    16.  trans   O     C.sub.6 H.sub.11                               278         24%    17.  trans   O     CH.sub.2φ                               423    2.24    18.  cis     O     H       300         28%    19.  cis     O     CH.sub.3                               514         56%    40.  cis     O     CH.sub.3 CH.sub.2                               382    3    20.  cis     O     CH(CH.sub.3).sub.2                               858    2.83    41.  cis     O     CH.sub.3 (CH.sub.2).sub.3                               1313   0.5    21.  cis     O     C(CH.sub.3).sub.3                               456         54%    22.  cis     O     C.sub.6 H.sub.11                               >1000  2.5    23.  cis     O     CH.sub.2φ                               585    8    24.  trans   S     H       14     1    25.  trans   S     CH.sub.3                               46     1    26.  trans   S     CH(CH.sub.3).sub.2                               96.5   0.5    27.  trans   S     C(CH.sub.3).sub.3                               46     0.5    28.  cis     S     H       496    3    29.  cis     S     CH.sub.3                               300    0.64    30.  cis     S     CH(CH.sub.3).sub.2                               828    2    31.  cis     S     C(CH.sub.3).sub.3                               334    1.5    32.  cis     S     C.sub.6 H.sub.11                               1287   2    ______________________________________     *All inhibitions shown by percentage are at 10 μM

                  TABLE 3    ______________________________________     ##STR21##                               PAF    Cmpd                       IC.sub.50                                    IC.sub.50    No    X     A              (nM) μM                                         5-LO inhibition*    ______________________________________    33    O     CH.sub.2 NHCONH(OH)                               280       32.9%    34    O     CH.sub.2 NHCONCH.sub.3 (OH)                               16.7 1.6    35    O     CH.sub.2 NHCONiPr(OH)                               284  2.5    36    O     CH.sub.2 NHCONC.sub.6 H.sub.11 (OH)                               420  1.7    37    O     CH.sub.2 NHCOBn(OH)                               73.6 0.4    ______________________________________     *All inhibition shown in percentage is at 10 μM

                  TABLE 4    ______________________________________     ##STR22##                                  PAF                                  IC.sub.50    No.    Isomer    X     A      (nM) 5-LO inhibition*    ______________________________________    42.    trans     S     CH     30   10.5%    ______________________________________     *Inhibition shown by percentage is at 10 μM

EXAMPLE 19 Effect of Compound on PAF-induced Hemoconcentration

a) Animals

Female CD-1 mice, weighing 16-20 grams, were obtained from Charles RiverLaboratory (Wilmington, Mass.). Tap water and rodent laboratory chow(5001, Purina Mills, St. Louis, Mo.) were provided ad libitum. The micewere housed for an average of four days prior to use.

b) Hematocrit measurement

PAF (1-O-alkyl-2-acetyl-sn-glyceryl-3-phosphorylcholine, Sigma ChemicalCo.) was dissolved in 0.25% bovine serum albumin (BSA) in 0.9% NaClsolution. Except for dose-response studies, 10 μg (10 ml/kg) of PAFsolution was injected into the tail vein. All test compounds weredissolved in 0.5 DMSO saline solution and intravenously injected at 3mg/kg body weight 15 minutes prior to PAF challenge. Thirty to fifty μLblood was collected by cutting the tail end into a heparinizedmicro-hematocrit tube (O.D. 1.50 mm) 15 minutes after PAFadministration. Table 5 provides the mouse hematocrit response tovarying concentration of PAF at 15 minutes after injection of PAF. Table6 provides the effect of various test compounds on PAF-induced mousehemoconcentration; the reference compound MK287 istrans-2-(3,4,5-trimethoxy)-5-(3-methyoxy-4-oxyallyl-(2-hydroxyethylsulfonyl))-tetrahydroftiran. (Sahoo, etal., BioorganicMedicinal Chem. Letters, (1991), 1,327.)

                  TABLE 5    ______________________________________    Mouse Hematocrit Response to Varying Concentration of PAF    at 15 Minutes After Injection of PAF    Doses of PAF                Animal        Hematocrit (%)    (ug/kg)     number        Mean   SEM    ______________________________________    0           5             45.4   0.5    0.049       5             45.2   0.3    0.195       5             48.2   0.6    0.781       5             52.0   2.5    3.125       5             62.0   1.8    12.5        5             68.0   1.2    50          5             72.4   1.2    200         5             75.8   1.2    ______________________________________

                  TABLE 6    ______________________________________    Effect of Test Compounds on PAF-Induced    Mouse Hemoconcentration               Animal        Hematocrit (%)    Compound   number        Mean   SEM    ______________________________________    Vehicle    11            66.5   1.5    Compound    42         5             45.2   0.6    14         5             54.4   2.4    12         5             61.1   1.2    13         5             62.3   2.1    15         5             64.6   1.5    ______________________________________

EXAMPLE 20 Effect of 2,5.Diaryl Tetrahydrothiophenes andTetrahydrofurans on Arachidonic Acid-induced Mouse Ear Edema

a) Animals

The animals were obtained and treated as in Example 16 above.

b) Edema measurement

Arachidonic acid was applied to both ears of mice in 0.025 ml of freshlyprepared vehicle (acetone:pyridine:water (97:2:1 v/v/v) and dried undera Sun-Lite Hitensity bulb. Except for dose-response studies, 0.5 mg ofarachidonic acid was used for all applications. AU test compounds weredissolved in 0.5% DMSO saline solution and intravenously injected at 3mg/kg body weight 15 minutes prior to arachidonic acid treatment.Animals were sacrificed by cervical dislocation at 1 hour after topicalapplication of arachidonic acid. A 7 mm-diameter disc of tissue wasremoved from each ear by means of a metal punch. Edema was measured bythe average wet weight of the both ear tissues.

Table 7 provides out the mouse ear edematous response to varyingconcentrations of arachidonic acid at 1 hour after topical application.Table 8 provides the effect of various test compounds on arachidonicacid induced mouse ear edema.

                  TABLE 7    ______________________________________    Mouse Ear Edema in Response to Varying Concentration of    Arachidonic Acid at 1 Hour After Topical Application                             Ear tissue    Doses of AA               Ear           weight (mg)    (mg/ear)   number        Mean   SEM    ______________________________________    0          4             12.4   0.08    0.125      4             15.8   0.63    0.25       4             14.9   1.05    0.5        4             25.1   2.88    1.0        4             29.8   2.56    2.0        4             30.3   1.67    ______________________________________

                  TABLE 8    ______________________________________    Effect of Test Compounds on    Arachidonic Acid-Induced Mouse Ear Edema    Compound     Animal number                            Inhibition (%)    ______________________________________    15           8          54.5    13           8          29.0    42           4          18.0    ______________________________________

EXAMPLE 21 Effect of 2,5-Diaryl Tetrahydrothiophenes andTetrahydrofurans on Endotoxin-induced Mouse Mortality

a) Animals

The mice were obtained and treated as in Example 16 above.

b) Mortality Measurement

Endotoxin (E. coli serotype 0127: B8, lipopolysaccharide, Sigma ChemicalCo.) St. Louis, was freshly dissolved in 0.9% NaCl solution. Except fordose-response studies, endotoxin at 50 mg/kg was injected into the tailvein. All test compounds were dissolved in 0.5% DMSO saline solution andintravenously injected at 3 mg/kg body weight 15 minutes prior to PAFchallenge. Death occurred typically within 12-36 hours. Mortality wasrecorded 48 hours after endotoxin challenge, as death rarely occurredafter 48 hr. The results of these evaluations are provided in Tables 9and 10. Table 9 sets out the extent of mouse mortality in response tovarying concentrations of endotoxin within 48 hours after intravenousinjection of endotoxin is set out in Table 9. Table 10 provides theeffect of test compounds on endotoxin-induced mouse mortality.

                  TABLE 9    ______________________________________    Mouse Mortality in Response to    Varying Concentration of Endotoxin    Within 48 Hours After I. V. Injection of Endotoxin    Doses of endotoxin                      Animal  Survival    (mg/kg)           number  (%)    ______________________________________    12.5              10      100    25                10      80    37.5              10      50    50                10       0    75                10       0    ______________________________________

                  TABLE 10    ______________________________________    Effect of Test Compounds on Endotoxin-Induced Mouse Mortality    Compound      Animal number                             Survival (%)    ______________________________________    13            6          83    15            5          17    ______________________________________

EXAMPLE 22 Effect of Compounds on Cytosol 5-Lipoxygenase ofRat BasophileLeukemia Cells

a) Enzyme preparation

Washed rat RBL cells (4×108) were suspended in 20 ml of 50M potassiumphosphate buffer at pH 7.4 containing 10% ethylene glycol/1 mM EDTA(Buffer A). The cell suspension was sonicated at 20 KHz for 30 seconds,and the sonicate was centrifuged at 10000×g for 10 minutes, followed byfurther centrifugation at 105000×g for 1 hr. The supernatant solution(cytosol fraction) containing 5-lipoxygenase was stored at -70° C.Protein concentration was determined according to the procedure ofBradford (Bradford Dye Reagent) with bovine serum albumin as a standard.

b) Enzyme assay

For routine assay of 5-LO the mixture contained 50 mM potassiumphosphate buffer at pH 7.4, 2 mM CaCl₂, 2 mM ATlP, 25M arachidonic acid(0.1 Ci) and enzyme (50-100 mg of protein) in a final volume of 200 L.The reaction was carried out at 24° C. for 3 minutes. The mixture wasextracted with 0.2 ml of an ice-cold mixture of ethyl ether:methanol:0.2M citric acid (30:4:1). The extract was subjected to thin-layerchromatography at -10° C. in a solvent system of petroleum ether:ethylether:acetic acid (15:85:0.1). The silica gel zones corresponding toauthentic arachidonic acid and its metabolites were scrapped intoscintillation vials for counting. The enzyme activity is expressed interms of the amount of arachidonic acid oxygenated for 3 minutes.

Modifications and variations of the present invention relating tocompounds that reduce the chemotaxis and respiratory burst leading tothe formation of damaging oxygen radicals of PMNs during an inflammatoryor immune response will be obvious to those skilled in the art from theforegoing detailed description of the invention. Such modifications andvariations are intended to come within the scope of the appended claims.

We claim:
 1. The method for the treatment of disorders mediated byplatelet activating factor or products of 5-lipoxygenase in an animal,comprising administering an effective amount of a compound of theformula: ##STR23## wherein: X is O, S, S(O), S(O)₂, CR⁹, or NR¹⁰ ;W isindependently:(1) --AN(OM)C(O)N(R³)R⁴, --AN(R³)C(O)N(OM)R⁴,--AN(OM)C(O)R⁴, --AC(O)N(OM)R⁴, --N(OM)C(O)N(R³)R⁴, --N(R³) C(O)N(OM)R⁴,--N(OM)C(O)R⁴, --C(O)N(OM)R⁴, --OR⁶ N(R⁵)R⁶ --(C₅ H₄ N)R⁶ R⁷, --OR⁶N(COR⁵)R⁶ --(C₅ H₄ N)R⁶ R⁷, --OR⁶ OC(O)N(COR⁵)R⁶ --(C₅ H₄ N)R⁶ R⁷, --OR⁶O(CO)N(CO₂ R⁶)R⁶ (C₅ H₄ N)R⁶ R⁷, --A(C₅ H₄ N)R⁶ R⁷, or --OR⁶ N(CO₂ R⁵)R⁶--(C₅ H₄ N)R⁶ R^(7;) (2) an amidohydroxyurea of the formula:--N(R¹⁹)C(O)C(R¹⁹)N(OM)C(O)NHR²⁰, --C(O)N(R¹⁹)C(R¹⁹)N(OM)C(O)NHR²⁰,--AN(R¹⁹)C(O)C(R¹⁹)N(OM)C(O)NHR²⁰, --AC(O)N(R¹⁹)C(R¹⁹)N(OM)C(O)NHR²⁰,--NHC(O)N(OM)C(R¹⁹)C(O)N(R¹⁹)₂ ; or --NHC(O)N(OM)C(R¹⁹)N(R¹⁹)C(O)R¹⁹ ;(3) an oxalkane of the structure: ##STR24## wherein n and m areindependently 1-4; (4) a thioalkane of the structure: ##STR25## or (5) aquinolylmethoxy of the structure: ##STR26## n is 1 or 2; m is 1, 2 or 3;p is 0 or 1; A is alkyl, alkenyl, alkynyl, alkyaryl, aralkyl, halo loweralkyl, halo lower alkenyl, halo lower alkynyl, --C₁₋₁₀ alkyl(oxy)C₁₋₁₀alkyl, --C₁₋₁₀ alkyl(thio)C₁₋₁₀ alkyl, --N(R³)C(O)alkyl,--N(R³)C(O)alkenyl, --N(R³)C(O)alkynyl, --N(R³)C(O)(alkyl)oxy(alkyl),--N(R³)C(O) (alkyl)thio(alkyl), --N(R³)C(O)N(alkyl),--N(R³)C(O)N(alkenyl), --N(R³)C(O)N(alkynyl),--N(R³)C(O)N(alkyl)oxy(alkyl), --N(R³)C(O)N(alkyl)thio(alkyl),--N(R³)C(O₂)alkyl, --N(R³)C(O₂)alkenyl, --N(R³)C(O₂)alkynyl,--N(R³)C(O₂)(alkyl)oxy(alkyl), --N(R³)C(O₂)(alkyl)thio(alkyl)--OC(O₂)alkyl, --OC(O₂)alkenyl, --OC(O₂)alkynyl,--OC(O₂)(alkyl)oxy(alkyl), --OC(O₂)(alkyl)thio(alkyl), --N(R³)C(S)alkyl,--N(R³)C(S)alkenyl, --N(R³)C(S)alkynyl, --N(R³)C(S)(alkyl)oxy(alkyl),--N(R³)C(S)(alkyl)thio(alkyl), --N(R³)C(S)N(alkyl),--N(R³)C(S)N(alkenyl), --N(R³)C(S)N(alkynyl),--N(R³)C(S)N(alkyl)oxy(alkyl), --N(R³)C(S)N(alkyl)thio(alkyl),--N(R³)C(S)S(alkyl), --N(R³)C(S)S(alkenyl), --N(R³)C(S)S(alkynyl),--N(R³)C(S)S(alkyl)oxy(alkyl), --N(R³)C(S)S(alkyl)thio(alkyl),--SC(S)S(alkyl), --SC(S)S(alkenyl), --SC(S)S(alkynyl),--SC(S)S(alkyl)oxy(alkyl), and --SC(S)S(alkyl)thio(alkyl); M ishydrogen, a pharmaceutically acceptable cation, or a metabolicallycleavable leaving group; Y is independently:(a) hydrogen; (b) R¹⁻⁶, R⁸,R¹⁰, --OR³, --OR¹¹, --OR¹², R³ S--, R⁵ S, R³ SO--, R⁵ SO--, R³ SO₂ --,R⁵ SO₂ --, CF₃ O--, CF₃ S--, CF₃ SO--, --CF₃ SO₂, --OCH₂ oxycyclopropyl,--OCH₂ C(O)OR³, --OCH₂ OR³, --OCH₂ C(O)R³, --OCH₂ C₃₋₈ cycloalkyl,--OCH₂ CH(R)R³, --OCH₂ cyclopropyl, --OCH₂ --aryl, --OCH₂ CH(OH)CH₂ OH,aryl--CH₂ --SO₂ --, (R₃)₂ CHCH₂ SO₂ --, --CH₂ CH(OH)CH₂ OH, CF₃ SO₂ --,R³ R⁴ N--, --OCH₂ CO₂ R³, --NR³ COR³, --OCONH₂, --OCONR³ R⁴, --CONH₂,--CONR³ R⁴, --CR³ R³ R⁴, --SO₂ NR³ R⁴, --SONR³ R⁴, CH₃ OCH₂ ONR³ R⁶,--SNR³ R⁴, --CO₂ R³, --NR³ R⁴ SO₂ R³, --NR³ R⁴ SOR, --COR³, --CONR³,--NO₂, --CN, --N(R⁵)CONR³ R⁴, --CH₂ N(R⁵)CONR³ R⁴, --R⁶ NR³ R⁴, --OR⁶NR³ R⁴, --O(O)CR⁵, --O(O)CNR³ R⁴, --OR⁶, --SR⁶ NR³ R⁴, --S(O)R⁶ NR³ R⁴,--SO₂ R⁶ NR³ R⁴, --SO₂ OR⁶ CO; --SR⁶ OH; --S(O)R⁶ OH; --SO₂ R⁶ OH; or--OR⁶ OC(O)N(CO₂ R⁶)R⁶ ; (c) a heterocycle, including but not limitedto, pyrryl, furyl, pyridyl, 1,2,4-thiadiazolyl, pyrimidyl, thienyl,isothiazolyl, imidazolyl, tetrazolyl, pyrazinyl, pyrimidyl, quinolyl,isoquinolyl, benzothienyl, isobenzofuryl, pyrazolyl, indolyl, purinyl,carbozolyl, benzamidazolyl, and isoxazolyl, optionally substituted witha group described in Y section (b); (d) ##STR27## wherein X' is halo,--C(O)aryl, CF₃, or OR³ ; --NR₃ COR³ ; --OCONH₂ ; --CR³ R³ R⁴ ; --CH₂OR³ ; --CH₂ OR³ ; --CH₂ CO₂ R³ ; --CH₂ OCOR³ ; R³ CH(R³)CH₂ SO₃ --;--NHCH₂ COOR³ ; halo such as F, Cl, Br and I; N⁺ R³ R³ R⁴ R⁷ ; --NR³ SO₂R³ ; COR³ ; NO₂ ; or CN; or ##STR28## wherein R¹³, R¹⁴ and R¹⁵independently represents: BO-- wherein B is --CH₂ --oxacyclopropyl,--CH₂ OR³, --CH₂ C(O)R³, --CH₂ CH(R³)R³, --CH₂ Aryl, --CH₂ CH(OH) --CH₂OH; R³ C(R³) ₂ CH₂ SO₂ ; or R¹³ --R¹⁴ or R¹⁴ --R¹⁵ are joined togetherto form a bridge such as --OCHR² CHR² --S(O)_(n) wherein n is 0 to 3; or##STR29## where X' is halo, --C(O)aryl, CF₃, or OR³ ; --CH₂ OR³ ; --CH₂CO₂ R³ ; --CH₂ COR³ ; --NHCH₂ COOR³ ; --N⁺ R³ R³ R⁴ R⁷ --, R¹ and R² areindependently hydrogen, halogen, or lower alkyl, halo lower alkyl, halo,--COOH; --CONR¹⁶ R¹⁷ wherein R¹⁶ and R¹⁷ independently represent C₁₋₆alkyl and hydrogen, --COOR³, alkenyl, --COR³ ; --CH₂ OR³ ; loweralkynyl, CH₂ NR⁴ R³ ; --CH₂ SR³ ; ═O; --OR³ ; or --NR³ R³ ; R³ and R⁴are independently cyclic and acyclic alkyl, alkenyl, alkynyl, aryl,aralkyl, alkyaryl, hydrogen, C₁₋₆ alkoxy-C₁₋₁₀ alkyl, C₁₋₆alkylthio-C₁₋₁₀ alkyl, and C₁₋₁₀ substituted alkyl (wherein thesubstituent is independently hydroxy or carbonyl, located on any ofC₁₋₁₀); R⁵ is cyclic and acyclic lower alkyl, lower alkenyl, loweralkynyl, halo lower alkyl, halo lower alkenyl, halo lower alkynyl,aralkyl, or aryl; R⁶ is cyclic and acyclic lower alkyl, lower alkenyl,lower alkynyl, aralkyl, halo lower alkyl, halo lower alkenyl, halo loweralkynyl, or aryl; R⁷ is an organic or inorganic anion; R⁸ is halo alkyl,halo lower alkyl, halo lower alkenyl, halo lower alkynyl, lower alkenyl,lower alkynyl, aralkyl, or aryl; R⁹ is independently hydrogen, halogen,lower alkyl, halo lower alkyl, lower alkenyl, lower alkynyl, --CONR³ R⁴,--COR⁵, --CO₂ R⁵, --CH₂ OR⁵, --CH₂ NR⁵ R⁵, --CH₂ SR⁵, ═O, ═NR⁵, --NR³R⁴, --NR³ R⁴ SR⁷, or --OR⁵ ; and R¹⁰ is --R³, --R⁸, --C(O)N(OR³)R³, or--OR³, R¹¹ is C₁ to C₁₂ alkyl; substituted C₁ to C₁₂ alkyl wherein thesubstituent is selected from the group consisting of hydroxy and amino,alkenyl, lower alkoxy-alkyl; alkylcarbonylalkyl, --alkylamino,--alkylamino(alkyl or dialkyl), lower alkyl S(O)_(m) --lower alkyl inwhich m is 0, 1 or 2; imidazolyl lower alkyl, morpholinyl lower alkyl,thiazolinyl lower alkyl, piperidinyl ower alkyl, imidazolylcarbonyl,morpholinyl carbonyl, amorpholinyl (lower alkyl) aminocarbonyl,N-pyrrylpyridinyl-lower alkyl; pyridylthio-lower alkyl;morpholinyl-lower alkyl; hydroxyphenylthio-lower alkyl;cyanophenylthio-lower alkyl; imidazolylthio-lower alkyl;triazolylthio-lower alkyl; triazolylphenylthio-lower alkyl;tetrazolylthio-lower alkyl; tetrazolylphenylthio-lower alkyl;aminophenylthio-lower alkyl; N,N-di-substituted aminophenylthio-loweralkyl wherein the substituents each independently represent lower alkyl;amidinophenylthio-lower alkyl; phenylsulfinyl-lower alkyl; orphenylsulfonyl lower alkyl; R¹² is selected from the group consistingof: alkyl; substituted alkyl wherein the substituent is selected fromthe group consisting of hydroxy and amino; -lower alkyl-O-R¹⁸, whereinR¹⁸ is --PO₂ (OH)^(-M) ⁺ or --PO₃ (M⁺)₂, wherein M⁺ is apharmaceutically acceptable cation; --C(O)(CH₂)₂ CO₂ ⁻ M⁺, or --SO₃ ⁻ M⁺; -lower alkylcarbonyl-lower alkyl; -carboxy lower alkyl; -loweralkylamino-lower alkyl; N,N-di-substituted amino lower alkyl-, whereinthe substituents each independently represent lower alkyl; pyridyl-loweralkyl; imidazolyl-lower alkyl; imidazolyl-Y-lower alkyl wherein Y isthio or amino; morpholinyl-lower alkyl; pyrrolidinyl-lower alkyl;thiazolinyl-lower alkyl; piperidinyl-lower alkyl; morpholinyl-lowerhydroxyalkyl; N-pyrryl; piperazinyl-lower alkyl; N-substitutedpiperazinyl-lower alkyl, wherein the substituent is lower alkyl;triazolyl-lower alkyl; tetrazolyl-lower alkyl; tetrazolylamino-loweralkyl; or thiazolyl-lower alkyl; R¹⁹ is H, lower alkyl, or loweralkenyl; and R²⁰ is H, halogen, lower alkoxy, or lower alkyl.
 2. Themethod of claim 1, wherein the animal is a human.
 3. The method of claim1, wherein the animal is a mammal.
 4. The method of claim 1, wherein theanimal is equine.
 5. The method of claim 1, wherein the animal iscanine.
 6. The method of claim 1, wherein the animal is bovine.
 7. Themethod for the treatment of disorders mediated by platelet activatingfactor or products of 5-lipoxygenase in an animal, comprisingadministering an effective amount of a compound of the formula ##STR30##Ar³ and Ar⁴ are independently ##STR31## wherein: X is O, S, S(O), S(O)₂,or NR¹⁰ ;t is 1, 2, 3, or 4; m is 1, 2, or 3; Z is independently W or Y;and all of the R groups are as defined in claim
 1. 8. The method ofclaim 7, wherein the animal is a human.
 9. The method of claim 7,wherein the animal is a mammal.
 10. The method of claim 7, wherein theanimal is equine.
 11. The method of claim 7, wherein the animal iscanine.
 12. The method of claim 7, wherein the animal is bovine.
 13. Amethod for the treatment of disorders medicated by platelet activatingfactor or products of 5-lipoxygenase in an animal, comprisingadministering an effective amount of a compound of the formula:##STR32## wherein Ar⁵ is: ##STR33## wherein Ar⁶ is: ##STR34## wherein: vis 0, 1, or 2;all R groups, t, m, and n are as defined in claims 1 and2; and O is selected from the group consisting of substituted C₁ to C₁₂alkyl wherein the substituent is selected from the group consisting ofhydroxy and amino, alkylcarbonylalkyl, alkyl; lower alkyl S(O)_(m)-lower alkyl in which m is 1 or 2; imidazolyl lower alkyl, morpholinyllower alkyl, thiazolinyl lower alkyl, piperidinyl ower alkyl,imidazolylcarbonyl, morpholinyl carbonyl, amorpholinyl (lower alkyl)aminocarbonyl, N-pyrrylpyridinyl-lower alkyl; pyridylthio-lower alkyl;morpholinyl-lower alkyl; hydroxyphenylthio-lower alkyl;cyanophenylthio-lower alkyl; imidazolylthio-lower alkyl;triazolylthio-lower alkyl; triazolylphenylthio-lower alkyl;tetrazolylthio-lower alkyl; tetrazolylphenylthio-lower alkyl;aminophenylthio-lower alkyl; N,N-di-substituted aminophenylthio-loweralkyl wherein the amine substituents each independently represent loweralkyl amidinophenylthio-lower alkyl; phenylsulfinyl-lower alkyl; orphenylsulfonyl lower alkyl; -lower alkyl-O--R¹⁸, wherein R¹⁸ is --PO₂(OH)⁻ M⁺ or --PO₃ (M+)₂, wherein M⁺ is a pharmaceutically acceptablecation; --C(O)(CH₂)₂ CO₂ ⁻ M⁺, or --SO₃ M⁺ ; -lower alkylcarbonyl-loweralkyl; -carboxy lower alkyl; -lower alkylamino-lower alkyl;N,N-di-substituted amino lower alkyl-, wherein the substituents eachindependently represent lower alkyl; pyridyl-lower alkyl;imidazolyl-lower alkyl; imidazolyl-Y-lower alkyl wherein Y is thio oramino; morpholinyl-lower alkyl; pyrrolidinyl-lower alkyl;thiazolinyl-lower alkyl; piperidinyl-lower alkyl; morpholinyl-lowerhydroxyalkyl; N-pyrryl; piperazinyl-lower alkyl; N-substitutedpiperazinyl-lower alkyl, wherein the amine substituent is lower alkyl;triazolyl-lower alkyl; tetrazolyl-lower alkyl; tetrazolylamino-loweralkyl; or thiazolyl-lower alkyl.
 14. The method of claim 13, wherein theanimal is a human.
 15. The method of claim 13, wherein the animal is amammal.
 16. The method of claim 13, wherein the animal is equine. 17.The method of claim 13, wherein the animal is canine.
 18. The method ofclaim 13, wherein the animal is bovine.